General Science

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1. The bell metal is an alloy of(a) Nickel and copper (b) Zinc and copper(c) Tin and copper (d) Tin and aluminum (e) Brass and nickel Answer. (c) 2. Parsec is a measure of(a) Brightness of heavenly body (b) Astronomical distance (c) Density of stars (d) Orbital velocity of giant stars Answer. (d) 3. By fixation of nitrogen is meant(a) Manufacture of nitrogen (b) Liquefication of nitrogen (c) Conversion of nitrogen into nitric acid (d) Conversion of atmospheric nitrogen into Useful compounds (e) Mixing of nitrogen with other elements Answer. (d) 4. Atoms of the same element, i. e., having the Same atomic number that differ in atomic Weight, are called(a) Isotopes (b) Isomers (c) Isobars (d) Isohytes (e) Isotherms Answer. (a) 5. The quantum number that tends to specify The orientation in space for an orbital is the(a) Principal quantum number (b) Orbital quantum number (c) Magnetic quantum number

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www.ibpsexam.co.in (d) Spin quantum number (e) Azimuthal quantum number Answer. (c) 6. Carbohydrates are the compounds of(a) Carbon and hydrogen (b) Carbon, oxygen and hydrogen (c) Carbon, oxygen, hydrogen and nitrogen (d) Carbon, nitrogen and hydrogen (e) None of these Answer. (b) 7. The tides in the ocean are due to(a) Wind over the oceans (b) Gravitational pull of the moon (c) Rotation of the earth (d) Revolution of the earth Answer. (b) 8. When water freezes its density(a) Increases (b) Decreases (C) remains constant (d) Becomes zero Answer. (b) 9. A chemical reaction that takes place with the evolution of heat is called a/an(a) Reversible reaction (b) Endothermic reaction (c) Thermal reaction (d) Exothermic reaction (e) Irreversible reaction Answer. (d) 10. The manufacture of iron ore Involves the process of(a) Oxidation (b) Reduction (c) Fractional distillation (d) Electrolysis (e) None of the above Answer. (b)


www.ibpsexam.co.in 11. A double convex air bubble in water would Behave as a(a) Convergent lens (b) Divergent lens (c) Both as convergent and divergent lenses (d) None of them Answer. (b) 12. Which of the following has the strongest Bleaching property? (a) Chlorine (b) Fluorine (c) Bromine (d) Iodine (e) Lithium Answer. (a) 13. The most abundant element in the earth’s Crust is(a) O (b) Al (c) Si (d) Fe (e) N Answer. (a) 14. Which of the following gases do not form Part of the atmosphere? (a) Nitrogen (b) Chlorine (c) Carbon dioxide (d) Oxygen (e) Ozone Answer. (b) 15. Nitric acid does not react with(a) Copper (b) Gold (c) Silver (d) Zinc (e) Iron Answer. (b)


www.ibpsexam.co.in 16. Oxygen is manufactured by the fractional Evaporation of(a) Water (b) Liquid air (c) Hydrogen peroxide (d) Liquid oxygen (e) None of the above Answer. (b) 17. Sodium burns in air to give(a) Sodium peroxide (b) Sodium hydroxide (c) Sodium monoxide (d) Sodium oxide and sodium nitride (e) Sodium oxide and sodium nitride Answer. (a) 19. Argon gas was discovered by(a) William Ramsay (b) Charles (c) Cavendish (d) John Davy (e) Alfred Werner Answer. (A) 19. Formaldehyde is the starting material for The manufacture of(a) D. D. T. (b) Rayon (c) Bakelite (d) Caprolactam (e) Nylon Answer. (c) 20. During burnings of fuels, carbon and Hydrogen present in the fuels are(a) Converted into carbon dioxide and Water vapour (b) Released into the atmosphere (c) Absorbed by the surroundings (d) Converted into alkanes (e) Reduced Answer. (a)


www.ibpsexam.co.in 21. Dry ice is(a) Ice which never melts (b) A term used for insensitive persons (c) Solid carbon dioxide (d) Frozen heavy water (e) None of these Answer. (c) 22. The compound which can be used to Prepare iodoform is(a) Accetic acid (b) Methyl iodide (c) Acetone (d) Propionaldehyde (e) Oxalic acid Answer. (c) 23. The phenomenon of “metamerism” is Shown by(a) Acetone and Propionaldehyde (b) Methyl propylether and diethyl ether (c) Ethyl alcohol and dimethyl ether (d) Propionic acid and acetic acid (e) Oxalic acid and lactic acid Answer. (b) 24. If two liquids have widely different boiling Points, they may be separated by(a) Steam distillation (b) Decantation (c) Evaporation (d) Fractional distillation (e) Sublimation Answer. (d) 25. What is laughing gas? (a) Carbon dioxide (b) Sulphur dioxide (c) Nitrous oxide (d) Hydrogen peroxide (e) Carbon monoxide Answer. (c)


www.ibpsexam.co.in 1. Which of the following is the lightest metal ? (A) Mercury (B) Silver (C) Lithium (D) Lead 2. The most important ore of Aluminium is — (A) Bauxite (B) Calamine (C) Calcite (D) Galena 3. The element present in the largest amount in rocks and minerals is — (A) Carbon (B) Silicon (C) Hydrogen (D) Aluminium 4. An alloy used in making heating elements for electric heating devices is — (A) Solder (B) Alloysteel (C) Nichrome (D) German Silver 5. German Silver is an alloy of — (A) Copper, Silver & Nickel (B) Silver, Copper & Aluminium (C) Zinc, Copper & Nickel (D) Silver, Zinc & Nickel 6. Air is a/an — (A) Compound (B) Element (C) Mixture (D) Electrolyte 7. Which of the following is the best conductor of Electricity ? (A) Ordinary water (B) Sea water (C) Boiled water (D) Distilled water


www.ibpsexam.co.in 8. Balloons are filled with — (A) Helium (B) Oxygen (C) Nitrogen (D) Argon 9. The charcoal used to decolourise raw sugar is — (A) Animal charcoal (B) Sugar charcoal (C) Cocoanut charcoal (D) Wood charcoal 10. The most abundant metal in the earth’s crust is — (A) Zinc (B) Copper (C) Aluminium (D) Iron 11. The gas used to extinguish fire is — (A) Neon (B) Nitrogen (C) Carbon dioxide (D) Carbon Monoxide 12. In which of the following activities Silicon Carbide is used ? (A) Making cement and glass (B) Disinfecting water and ponds (C) Making castes for statues (D) Cutting very hard substances 13. The element common to all acids is — (A) Oxygen (B) Hydrogen (C) Nitrogen (D) Sulphur 14. Gobar gas contains mainly — (A) Methane (B) Carbon dioxide (C) Butane (D) Carbon Monoxide 15. The most malleable metal is — (A) Silver


www.ibpsexam.co.in (B) Gold (C) Aluminium (D) Sodium 16. Tetraethyl lead is used as — (A) Mosquito repellent (B) Pain Killer (C) Fire extinguisher (D) Petrol additive 17. Which of the following is used in beauty parlours for hair setting ? (A) Phosphorus (B) Sulphur (C) Chlorine (D) Silicon 18. Which of the following is a non-metal that remains liquid in room temperature ? (A) Bromine (B) Chlorine (C) Helium (D) Phosphorus 19. From which mineral is radium obtained — (A) Limestone (B) Haematitie (C) Pitchblende (D) Rutile 20. What is laughing gas ? (A) Carbon dioxide (B) Sulphur dioxide (C) Nitrogen Dioxide (D) Nitrous oxide 21. Which of the following is used as a material for making protective windows in space probes ? (A) Steel (B) Graphite (C) Tungsten (D) Diamond 22. Which form of phosphorus is used in safety metals? (A) Red Phosphorus (B) White Phosphorus


www.ibpsexam.co.in (C) Yellow Phosphorus (D) Black Phosphorous 23. Stainless steel is an alloy of — (A) Iron, Carbon and Nickel (B) Iron and Manganese (C) Iron, Chromium and Zinc (D) Iron, Chromium and Nickel 24. Which of the following is not correctly matched ? (A) Galena : Lead Sulphide (B) Green vitriol : Copper sulphate (C) Plaster of Paris : Calcium sulphate (D) Calomel : Mercurous Chloride 25. Which of the following metals forms an amalgum with other metals ? (A) Lead (B) Tin (C) Zinc (D) Mercury Answers: 1. (C) 2. (A) 3. (B) 4. (C) 5. (C) 6. (C) 7. (B) 8. (A) 9. (D) 10. (C) 11. (C) 12. (D) 13. (B) 14. (A) 15. (B) 16. (D) 17. (B) 18. (A) 19. (C) 20. (D) 21. (D) 22. (A) 23. (D) 24. (B) 25. (D)

1. Which of the following is not an ore of Aluminium? (A) Felsper (B) Bauxite (C) Cryolite (D) Azurite 2. Most soluble in water is — (A) Camphor (B) Sugar (C) Sulphur (D) Common Salt 3. Bromine is —


www.ibpsexam.co.in (A) colourless gas insoluble in water (B) A highly inflammable gas (C) A Black solid. (D) A red liquid. 4. The metal used in storage batteries — (A) Iron (B) Copper (C) Lead (D) Zinc 5. Water has maximum density at — (A) –4°C (B) 0°C (C) 4°C (D) 100°C 6. The chemial name of Uria is — (A) Aneurin (B) Chloroetane (C) Carbamide (D) None of these 7. Permanent hardness of water can be removed by adding — (A) Potassium Permanganate (B) Chlorine (C) Bleaching Powder (D) Washing Soda 8. The formula of Plaster of Paris is — (A) CaSO4 (B) CaSO4, 2H2O (C) 2CaSO4, 4H2O (D) 2CaSO4, H2O 9. Which of the following substance is a bad conductor of electricity but a good conductor of heat? (A) Asbestos (B) Celluloid


www.ibpsexam.co.in (C) Purspecks (D) Mica 10. Carborandum is — (A) Silicon Dioxide (B) Silicon Carbide (C) Silicon Nitride (D) Silicon Phosphide 11. Which of the following is the best conductor of electricity ? (A) Copper (B) Mica (C) Zinc (D) Silver 12. Washing soda is the common name of — (A) Calcium Carbonate (B) Calcium Bi-Carbonate (C) Sodium Carbonate (D) Sodium Bi-Carbonate 13. The filament of electric bulb is made of — (A) Iron (B) Nichrome (C) Tungsten (D) Graphite 14. Bleaching powder is made from — (A) Sulphur dioxide and gypsum (B) Chlorine and Charcoal (C) Soda ash and lime (D) Lime and Chlorine 15. The two elements that are frequently used for making transistors are — (A) Boron and Aluminium (B) Silicon and Germenium (C) Iridium and Tungsten (D) Niobium and Columbium


www.ibpsexam.co.in 16. Which of the following gas is not known as green house gas ? (A) Methane (B) Carbon dioxide (C) Nitrous oxide (D) CFC 17. Which of the following is not a neutral oxide ? (A) Carbon Monoxide (B) Sulphur Dioxide (C) Water (D) Nitric Oxide 18. Which of the following is used in making smoke bombs ? (A) Sulphur (B) Phosphorus (C) Hydrogen (D) Carbon 19. Caustic Soda is — (A) Nacl (B) Na2CO3 (C) NaOH (D) NaHCO3 20. Chemical formula of Water glass is — (A) Na2SiO3 (B) Al2O3 (C) NaAlO2 (D) CaSiO3 21. Which of the following is not a bleaching agent? (A) Sulpher di-oxide (B) Carbon di-oxide (C) Sodium hypochlorite (D) Chlorine 22. The gas usually filled in electric bulb is — (A) Hydrogen (B) Oxygen


www.ibpsexam.co.in (C) Nitrogen (D) Carbon di-oxide 23. Heavy water is — (A) Tritium oxide (B) Deuterium oxide (C) Rain water (D) Water at 4°C 24. The gases used in different types of welding would include — (A) Oxygen & Hydrogen (B) Oxygen, acetylene & argon (C) Oxygen & acetylene (D) Oxygen, hydrogen & nitrogen 25. Which of the following alloys is used for making magnets ? (A) Duralumin (B) Stainless Steel (C) Alnico (D) Magnelium Answers: 1. (D) 2. (B) 3. (D) 4. (C) 5. (C) 6. (C) 7. (D) 8. (D) 9. (D) 10. (B) 11. (D) 12. (C) 13. (C) 14. (D) 15. (B) 16. (C) 17. (B) 18. (B) 19. (C) 20. (A) 21. (B) 22. (C) 23. (B) 24. (C) 25. (C)

1. Parmanent hardness of water may be removed by the addition of — (A) Alum (B) Sodium Carbonate (C) Lime (D) Potassium Permanganate 2. Potassium nitrate is used in — (A) Salt (B) Glass (C) Fertiliser (D) Medicine


www.ibpsexam.co.in 3. In which type of rocks are metals like Gold and Copper mostly found ? (A) Old igneous (B) Old sedimentary (C) Old metamorphic (D) New metamorphic 4. Which of the following gases is lighter than air ? (A) Carbon dioxide (B) Oxygen (C) Ammonia (D) Chlorine 5. Which of the following is used as lubricant ? (A) Graphite (B) Silica (C) Diamond (D) Iron Oxide 6. The purest form of iron is — (A) Steel (B) Pig iron (C) Cast iron (D) Wrought iron 7. The percentage of carbon is the least in — (A) Grey cast iron (B) Wrought iron (C) White cast iron (D) Steel 8. The colour of Emerald is — (A) Violet (B) Yellow (C) Deep Green (D) Prussian Blue 9. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of — (A) Nitrates (B) Zeolites (C) Sulphonates (D) None of these 10. Rust is — (A) A mixture of Fe2O3 and Fe(OH)2


www.ibpsexam.co.in (B) A mixture of FeO and Fe(OH)2 (C) FeO only (D) A mixture of Fe2O3, 3H2O and FeO 11. Liquefied Petroleum gas (LPG) consists of mainly — (A) Methane, Ethane and Hexane (B) Ethane, Hexane and Nonane (C) Methane, Butane and Propane (D) Methane, Hexane and Nonane 12. The metal that is present in Photo Films is — (A) Mercury (B) Platinium (C) Magnesium (D) Silver 13. Which of the following is in liquid form at room temperature ? (A) Cerium (B) Sodium (C) Francium (D) Lithium 14. Soda water contains — (A) Nitrous acid (B) Carbonic acid (C) Carbon dioxide (D) Sulphuric acid 15. Which of the following is basis of the modern periodic table ? (A) Atomic mass (B) Atomic number (C) Atomic size (D) Atomic volume 16. Of the following metals, which one pollutes the air of a big city ? (A) Copper (B) Cadmium (C) Lead (D) Chromium 17. Brass is an alloy of — (A) Nickel and Copper (B) Copper and Silver (C) Nickel and Zinc


www.ibpsexam.co.in (D) Zinc and Copper 18. The element required for Solar energy conversion — (A) Beryllium (B) Silicon (C) Tantalum (D) Ultra pure carbon 19. Monazite is an ore of — (A) Sodium (B) Titanium (C) Thorium (D) Zirconium 20. Potassium Permanganate is used for purifying drinking water, because — (A) It dissolves the impurities of water (B) It is a sterilizing agent (C) It is an oxidising agent (D) It is a reducing agent. 21. The presence of which of the following salts in water causes corrosion in steam boilers ? (A) Sodium Chloride (B) Magnesium Chloride (C) Calcium bicarbonate (D) Potassium bicarbonate 22. Water is a good solvent of ionic salts because — (A) It has no colour (B) It has a boiling point (C) It has a high dipole moment (D) It has a high specific heat 23. The hardest substance available in earth is — (A) Platinum (B) Silicon (C) Diamond (D) Gold 24. Which of the following is the best conductor of electricity ? (A) Zinc (B) Copper (C) Gold (D) Silver


www.ibpsexam.co.in 25. The ratio of pure gold in 18 carat gold is — (A) 60% (B) 75% (C) 80% (D) 100% Answers: 1. (B) 2. (B) 3. (A) 4. (C) 5. (A) 6. (D) 7. (D) 8. (C) 9. (B) 10. (D) 11. (C) 12. (D) 13. (C) 14. (C) 15. (B) 16. (C) 17. (D) 18. (B) 19. (C) 20. (C) 21. (B) 22. (C) 23. (C) 24. (D) 25. (B)

1. Cow milk is a rich source of — (A) Vitamin A (B) Vitamin B1 (C) Vitamin C (D) Vitamin D 2. The element found in the surface of the Moon is — (A) Tin (B) Tungsten (C) Tantalum (D) Titanium 3. The average salinity of sea water is — (A) 2% (B) 3% (C) 2.5% (D) 3.5% 4. Which of the following is the most stable element? (A) Uranium (B) Hydrogen (C) Oxygen (D) Lead 5. Find the odd one ? (A) Marble (B) Chalk (C) Lime Stone (D) Slaked Lime


www.ibpsexam.co.in 6. Diamond is harder than graphite because of — (A) Difference of layers of atoms (B) Tetrahedral structure of diamonds (C) Difference of crystaline structures (D) None of these 7. A super conductor is characterised by — (A) Zero permeability (B) Low permeability (C) High permeability (D) Infinite permeability 8. Of the various forms of carbon, which one is used for absorption purpose ? (A) Diamond (B) Graphite (C) Coke (D) Wood Charcoal 9. The main constituents of Pearl are — (A) Calcium Carbonate, Magnesium Carbonate (B) Calcium oxide, Ammonium Chloride (C) Argonite , Chonchiolin (D) Ammonium Sulphate, Sodium Carbonate 10. An element that does not occur in nature but can be produced artificially is — (A) Thorium (B) Radium (C) Plutonium (D) Uranium 11. The inert gas which is substituted for nitrogen in the air, used by deep sea drivers for breathing is — (A) Helium (B) Argon (C) Krypton (D) Xenon 12. The group of metals Fe, Co, Ni may be best called as — (A) Alkali metals (B) Rare metals (C) Main group metals (D) Transition metals 13. Which of the following characters is not shown by hydrogen —


www.ibpsexam.co.in (A) It burns in air to form water (B) It supports combustion (C) It combines with almost all metals forming hydrides (D) It readily combines with fluorine and chlorine 14. Which of the following elements is obtained from sea weeds ? (A) Argon (B) Sulphur (C) Vanadium (D) Iodine 15. The metallic constituents of hard water are — (A) Magnesium, Calcium and tin (B) Iron, tin and calcium (C) Calcium, magnesium and iron (D) Magnesium, tin and iron 16. The property of a substance to absorb moisture from the air on exposure is called — (A) Osmosis (B) Desiccation (C) Efflorescence (D) Deliquescene 17. Brass gets discoloured in air due to the presence of which gas in air — (A) Carbon dioxide (B) Oxygen (C) Hydrogen Sulphide (D) Nitrogen 18. Quartz crystals normally used in quartz clocks etc. is chemically — (A) Sodium Silicate (B) Silicon dioxide (C) Germenium dioxide (D) A mixture of (B) & (C) 19. Bell Metal is an alloy of — (A) Brass and Nickel (B) Zinc and Copper (C) Tin and Copper (D) Nickel and Copper 20. The high temperature superconductors are — (A) Metal alloys (B) Ceramic oxides


www.ibpsexam.co.in (C) Inorganic polymers (D) Pure rare earth metals 21. The ingredients of Gun metal are — (A) Iron, tin (B) Copper, tin (C) Iron, brass, tin (D) Iron, zinc, titanium 22. The gas usually causing explosions in coal mines is — (A) Hydrogen (B) Carbon monoxide (C) Air (D) Methane 23. Cotton fibers are made of — (A) cellulose (B) starch (C) proteins (D) fats 24. Which of the following ores does not contain iron? (A) Haematite (B) Magnetite (C) Limonite (D) Cassiterite 25. Nuclear fission is caused by the impact of — (A) Proton (B) Electron (C) Neutron (D) (A) & (b) Answers: 1. (B) 2. (D) 3. (D) 4. (D) 5. (D)6. (C) 7. (A) 8. (D) 9. (A) 10. (C) 11. (A) 12. (D) 13. (B) 14. (D) 15. (C) 16. (D) 17. (C) 18. (B) 19. (C) 20. (B) 21. (B) 22. (D) 23. (A) 24. (D) 25. (C)

1. Which is a good nuclear fuel ? (A) Uranium — 238 (B) Neptunium — 239


www.ibpsexam.co.in (C) Thorium — 236 (D) Plutonium - 236 2. Long distance photography is facilitated by — (A) Visible light (B) X-rays (C) Infra Red rays (D) Ultra violet rays 3. Which radioactive pollutant has recently drawn the attention of the public due to its occurance in the building materials ? (A) Radium (B) Radon (C) Thorium (D) Plutonium 4. In an atomic explosion enormous energy is released which is due to the — (A) Conversions of neutrons into protons (B) Conversion of chemical energy into nuclear energy (C) Conversion of mechanical energy into nuclear energy (D) Conversion of mass into energy 5. Which of the following is used as a coolant in nuclear reactors ? (A) Heavy water (B) Cadmium (C) Liquid sodium (D) Graphite 6. The isotope of Uranium capable of sustaining chain reaction is — (A) U 235 (B) U 238 (C) U 239 (D) None of these 7. Radioactive disintegration of Uranium ultimately results in formation of — (A) Radium (B) Thorium (C) Polonium (D) Lead 8. Atom bomb is made on the basis of — (A) Nuclear fusion (B) Nuclear fission (C) Both (A) & (B)


www.ibpsexam.co.in (D) None of these 9. Which of the following has least penetrating power? (A) Alpha particles (B) Beta particles (C) Gamma particles (D) All have same power 10. What is increasing order of the wave lengths of the following colours — 1. Orange 2. Indigo 3. Yellow 4. Violet (A) 1, 2, 3, 4 (B) 3, 4, 1, 2 (C) 4, 3, 2, 1 (D) 4, 2, 3, 1 11. Atoms are composed of — (A) Electrons only (B) Protons only (C) Electrons & Protons (D) Electrons & Nuclei 12. The age of most ancient geological formation is estimated by — (A) Potassium-Argon method (B) Ra-Si method (C) C14 method (D) Uranium-lead method 13. Which of the following is used as a moderator in nuclear reactor ? (A) Ordinary water (B) Radium (C) Thorium (D) Graphite 14. Isotopes are separated by — (A) Filtration (B) Sublimation (C) Distillation (D) Crystalization 15. Who suggested that the most of the mass of atom is located in nucleus ? (A) Bohr


www.ibpsexam.co.in (B) Thomson (C) Rutherford (D) Avogadro 16. Meson particles are found in — (A) R-rays (B) X-rays (C) Laser beam (D) Cosmic rays 17. An atom of an element with mass number 23 and atomic number 11 will have — (A) 11 neutrons, 12 protons and 11 electrons (B) 11 protons, 12 neutrons and 11 electrons (C) 11 protons, 12 electrons and 11 neutrons (D) 23 protons and 11 electrons 18. The location and energy of an electron in an atom can be specified by — (A) Atomic mass (B) Atomic number (C) Quantum numbers (D) None of these 19. Old-written material, which cannot be read easily can be read by — (A) Cosmic Rays (B) Ultraviolet rays (C) Infra Red rays (D) None of these 20. In an atomic nucleus, neutrons and protons are held together by — (A) Gravitational forces (B) Magnetic forces (C) Exchange forces (D) Coulombic forces 21. Which of the following elements is non-radioactive? (A) Uranium (B) Thorium (C) Plutonium (D) Zirconium 22. According to Dalton’s atomic theory the smallest particle which can exist independently is — (A) An atom (B) A molecule


www.ibpsexam.co.in (C) A cation (D) An anion 23. The recent atomic weight scale is based on — (A) 1H1 (B) 1H2 (C) 6C12 (D) 8O16 24. The neutral atom’s two isotopes differ in the number of — (A) Electron shells (B) Protons (C) Valence electrons (D) Neutrons 25. Optical fibres are mainly used in — (A) Communication (B) Weaving (C) Musical Instruments (D) Food Industry Answers: 1. (C) 2. (C) 3. (C) 4. (D) 5. (C) 6. (A) 7. (D) 8. (B) 9. (A) 10. (D) 11. (D) 12. (C) 13. (D) 14. (C) 15. (C) 16. (D) 17. (B) 18. (C) 19. (C) 20. (C) 21. (D) 22. (A) 23. (C) 24. (D) 25. (A)

1. The first synthetic fibre made by man was — (A) Rayon (B) Nylon (C) Polyester (D) Terycott 2. Which variety of glass is heat resistant ? (A) Hard glass (B) Flint glass (C) Pyrex glass (D) Bottle glass 3. Which of the following is used for removing air bubbles from glass during its manufacture ?


www.ibpsexam.co.in (A) Fledspar (B) Arsenic oxide (C) Potassium Carbonate (D) Soda Ash 4. What are soaps ? (A) Salts of silicates (B) Ester of heavy fatty acids (C) Sodium or potassium salts of heavier fatty acids (D) Mixture of glycerol and alcohol 5. Which of the following is used in making artificial sweetener saccharine ? (A) Benzene (B) Toluene (C) Phenol (D) Aniline 6. Rayon is chemically — (A) Glucose (B) Amylase (C) Cellulose (D) Peptin 7. Which of following is used as a filter in rubber tyres? (A) Graphite (B) Coal (C) Coke (D) Carbon Black 8. In vulcanization, natural rubber is heated with — (A) Carbon (B) Sulphur (C) Silicon (D) Phosphorus 9. Which type of fire extinguisher is used for petroleum fire ? (A) Foam type (B) Soda acid type (C) Powder type (D) None of these 10. Which is/ are the important raw materials in cement industry ? (A) Limestone (B) Gypsum & Clay


www.ibpsexam.co.in (C) Clay (D) Limestone & Clay 11. Which of the following is the petroleum wax ? (A) Bees wax (B) Carnauba wax (C) Paraffin wax (D) Jojoba wax 12. Which of the following fibres is generally preferred for making gauze and lint ? (A) Cotton (B) Rayon (C) Nylon (D) Terylene 13. Rubber is coagulated from latex by adding — (A) Hydrochloric acid (B) Acetic acid (C) Sulphuric acid (D) Carbonic acid 14. Paper is manufactured by — (A) Wood and resin (B) Wood, Sodium and Bleaching powder (C) Wood and bleaching powder (D) Wood, Calcium, hydrogen sulphate and resin 15. Which synthetic fibre is known as artificial silk ? (A) Cotton (B) Rayon (C) Terylene (D) Nylon 16. Deep blue colour is imparted to glass by the presence of — (A) Iron oxide (B) Cupric oxide (C) Nickel oxide (D) Cobalt oxide 17. The combustible material at the tip of a safety match stick is — (A) Sulphur (B) Manganese dioxide (C) Phosphorus (D) Antimony sulphide


www.ibpsexam.co.in 18. Which of the following roofs provide better protection against fire ? (A) Cement slab (B) Asbestos sheet (C) Reinforced concrete (D) None of these 19. The material used for bleaching paper pulp is — (A) Chlorine (B) Caustic soda (C) Sodium Hypochlorite (D) Lime 20. Which of the following is a protein ? (A) Wool (B) Starch (C) Natural rubber (D) Cellulose 21. Soap is a mixture of sodium or potassium salts of— (A) Monocarboxylic acid (B) Glycerols (C) Dicarboxylic acid (D) Tricarboxylic acid 22. Which of the following material is used to prepare blue-black ink ? (A) Gallic acid (B) Tannic acid (C) Ferrous sulphate (D) All of these 23. The type of glass used in making prisms and lenses is — (A) Soft glass (B) Pyrex glass (C) Jena glass (D) Flint glass 24. Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called — (A) Carbon Monoxide (B) Phosphine (C) Phosgene (D) None of these


www.ibpsexam.co.in 25. Which of the following is commonly called a polyamide ? (A) Rayon (B) Orion (C) Terylene (D) Nylon Answers: 1. (B) 2. (C) 3. (B) 4. (C) 5. (B) 6. (C) 7. (D) 8. (B) 9. (C) 10. (D) 11. (C) 12. (B) 13. (B) 14. (D) 15. (B) 16. (D) 17. (D) 18. (B) 19. (C) 20. (C) 21. (A) 22. (D) 23. (D) 24. (D) 25. (D)

1. The major ingredient of leather is — (A) Carbohydrate (B) Collagen (C) Polymer (D) Nucleic acid 2. Glass is made from the mixture of — (A) Quartz and mica (B) Sand and salt (C) Sand and silicates (D) None of these 3. Epoxy resins is used as — (A) Moth repellants (B) Insecticides (C) Detergents (D) Adhesives 4. Polythene is industrially prepared by the polymerization of — (A) Methane (B) Styrene (C) Acetylene (D) Ethylene 5. A mixture of water and alcohol can be separated by — (A) Filtration (B) Evaporation (C) Distillation (D) Decantation


www.ibpsexam.co.in 6. A substance which changes readily into vapour without heating is called — (A) Efflorescent (B) Synthetic (C) Volatile (D) Effervescent 7. In which following processes light energy is converted into chemical energy ? (A) Respiration (B) Fermentation (C) Photosynthesis (D) Photorespiration 8. Cooking oil can be converted into vegetables ghee by the process of — (A) Oxidation (B) Hydrogenation (C) Distillation (D) Crystallisation 9. Photosynthesis is — (A) An exothermic process (B) An endothermic process (C) A neutral process (D) A thermostatic process 10. Which of the following substances exhibit the property of sublimation ? (A) Ice (B) Wax (C) Camphor (D) Ethyl Alcohol 11. Combustion is the process in which — (A) Heat is produced (B) Light is produced (C) Heat and Light is produced (D) None of these 12. The chemical used as a fixer in photography is — (A) Borax (B) Sodium thiosulphate (C) Sodium Sulphate (D) Ammonium persulphate 13. A mixture of iron filings and sand can be separated by — (A) Heating


www.ibpsexam.co.in (B) Sublimation (C) Hand picking (D) Magnetic Separation 14. In which of the following process, Vanadium Pentoxide is used as a catalyst ? (A) Contact process (B) Haber process (C) Solvary process (D) None of these 15. The rate of chemical reaction does not depend on — (A) Concentration (B) Catalyst (C) Temperature (D) Pressure 16. Which of the following metals can displace hydrogen from dilute acids ? (A) Zinc (B) Gold (C) Copper (D) Silver 17. Reaction of alcohol, with carboxylic acid is known as — (A) Substitution reaction (B) Addition reaction (C) Esterification (D) Hydrogenation 18. Saponification involves the hydrolysis of fats and oils by — (A) Water (B) Washing soda (C) Stearic acid (D) Caustic acid 19. Which of the following gases is obtained by the reaction of water with Calcium Carbide ? (A) Acetylene (B) Ethylene (C) Methane (D) Water gas 20. The gas liberated during the reaction of copper with dilute nitric acid is — (A) NO2 (B) N2O5 (C) O2


www.ibpsexam.co.in (D) NO 21. Which of following substances undergoes chemical change on heating ? (A) Sodium Chloride (B) Silica (C) Lead Nitrate (D) Platinum wire 22. Water is neither acidic nor alkaline because — (A) it cannot accept or donate protons (B) it boils at high temperature (C) it can dissociate into equal number of hydrogen ions (D) it cannot donate or accept electrons 23. PVC is obtained by the polymerisation of — (A) Propene (B) Vinyl Chloride (C) Styrene (D) Acetylene 24. Which of the following metals can displace zinc from a solution of zinc sulphate ? (A) Lead (B) Magnetism (C) Iron (D) Mercury 25. Water gas is prepared by passing — (A) Steam over white hot coke (B) Air over red hot coke (C) Methane over red hot coke (D) Steam over heated sulphur Answers: 1. (B) 2. (C) 3. (D) 4. (D) 5. (C) 6. (C) 7. (C) 8. (B) 9. (B) 10. (C) 11. (C) 12. (B) 13. (D) 14. (A) 15. (D) 16. (A) 17. (C) 18. (D) 19. (C) 20. (D) 21. (C) 22. (C) 23. (B) 24. (B) 25. (A)

1. Which of the following metals react with nitrogen to form nitride ? (A) Sodium (B) Potassium (C) Magnesium


www.ibpsexam.co.in (D) None of these 2. One micron is equal to — (A) 1/10th of mm (B) 1/100th of mm (C) 1/1000th of mm (D) 1/10000th of mm 3. Hydrometer is an instrument — (A) For measuring sound in water (B) To detect the presence of hydrogen in the atmosphere (C) For measuring the specific gravity of liquids (D) To detect the changes in atmospheric humidity 4. Which thermometer is used to indicate the lowest temperature ? (A) Clinical thermometer (B) Gas thermometer (C) Alcohol thermometer (D) Resistance thermometer 5. A chronometer measures — (A) Sound waves (B) Time (C) Water waves (D) Colour contrast 6. One fathom is equal to — (A) 6 metres (B) 6 feet (C) 60 feet (D) 60 cms 7. What is the unit for measuring the pitch or frequency of sound ? (A) Coulomb (B) Hum (C) Cycles (D) Decible 8. The fastest acting enzyme in the biological kingdom is — (A) lipase (B) amylase (C) carboxypeptidase (D) carbonic anhydrase


www.ibpsexam.co.in 9. German biochemist, Emil Fischer — (A) gave Operon model (B) compared the fit between enzyme substrate to lock and key (C) proposed the theory of competitive inhibition (D) proposed the feed back inhibition theory 10. Enzymes generally have — (A) same pH and temperature optima (B) same pH but different temperature optima (C) different pH but same temperature optima (D) different pH and temperature optima 11. Coenzyme is — (A) always protein (B) often metal (C) always inorganic compound (D) often a vitamin 12. J. B. Sumner isolated first enzyme from Jackbeans as — (A) amylase (B) trypsin (C) urease (D) renin 13. Enzymes are absent in — (A) fungi (B) bacteria (C) viruses (D) algae 14. The enzymes sucrase acts on — (A) sucrose only (B) sucrose and starch (C) all disaccharides (D) any organic monomer 15. Vitamins are — (A) inorganic substances which cannot be synthesized by animals (B) inorganic by animals (C) organic substances that cannot be generally synthesized by animals (D) organic substances which can be commonly synthesized by animals 16. Richest source of vitamin B1 (thiamine) is — (A) cod liver oil


www.ibpsexam.co.in (B) curd (C) whole bread meal (D) eggs 17. One of these vitamins is called erythrocyte maturation factor — (A) A (B) C (C) K (D) B12 18. The vitamin which can be synthesized in the gut by bacterial action is — (A) vitamin B1 (B) vitmain B2 (C) vitmain B12 (D) All above 19. Deficiency of vitamin D causes — (A) rickets (B) beri-beri (C) scurvy (D) night blindness 20. Which one of the following is the best source of vitamin A? (A) Apple (B) Carrot (C) Amla (D) Raddish 21. Ascorbic acid is — (A) Vitamin K (B) Vitamin B (C) Vitamin A (D) Vitamin C 22. Sterility in some animals is caused due to deficiency of — (A) vitamin B (B) vitamin D (C) vitamin B12 (D) vitamin E 23. At the boiling temperature an enzyme becomes — (A) killed (B) denatured (C) uneffected


www.ibpsexam.co.in (D) inactivated 24. Starch hydrolysing enzyme is — (A) sucrose (B) invertase (C) amylase (D) cellulase 25. The enzyme used for the formation of RNA on DNA is — (A) DNA polymerase (B) endonuclease (C) topoisomerase (D) RNA polymerase Answers: 1. (C) 2. (C) 3. (C) 4. (C) 5. (B) 6. (B) 7. (D) 8. (D) 9. (B) 10. (C) 11. (D) 12. (C) 13. (C) 14. (A) 15. (C) 16. (C) 17. (D) 18. (D) 19. (A) 20. (B) 21. (D) 22. (D) 23. (B) 24. (C) 25. (D)

1. The term ‘enzyme’ was coined by — (A) de Duve (B) Kunhe (C) C. Darwin (D) de Candolle 2. Which set of conditions represents easiest way to liquify gas ? (A) Low temperature, high pressure (B) High temperature, low pressure (C) Low temperature, low pressure (D) High temperautre, high pressure 3. Artificial rain is caused by spraying small pellets of which of the following over clouds ? (A) Ice (B) Dry Ice (C) NaOH (D) NH4Cl 4. Galvanisation is deposition of —


www.ibpsexam.co.in (A) Zinc of iron (B) aluminium on Iron (C) tin on iron (D) copper on iron 5. Equal volumes of different gases at any definite temperature and pressure have — (A) Equal weights (B) equal masses (C) equal density (D) equal no. of molecules 6. Milk is an example of — (A) suspension (B) true solution (C) emulsion (D) gel 7. Which of the following modes of expressing concentration is independent of temperature — (A) Molarity (B) Molality (C) Normality (D) Formality 8. If temperature is kept constant during the reaction the process is called — (A) Adiabatic (B) Isobaric (C) Isochoric (D) Isothermal 9. Cholera is caused by — (A) vibrio cholerae (B) salmonella (C) bacterioceoccurs (D) None of these 10. Why do colloidal substance do not deposited below ? (A) Specific gravity is less (B) It is of very less amount in respect of solvent (C) They carry electrical charges


www.ibpsexam.co.in (D) They are converted to sovent 11. Lightening cause rainfall because — (A) It cause combination of oxygen and nitrogen (B) Some of the gas molecules become bigger (C) It activate H2O molecule (D) Photo-electricity reaction starts 12. Nitrification means — (A) Liquifaction of nitrogen (B) Convert the atmospheric nitrogen to effective nitrogen compound. (C) Production of nitrogen from air (D) Conversion of nitrogen to nitric acid. 13. Cell membrane is — (A) permeable (B) selectively permeable (C) semipermeable (D) impermeable 14. Cholesterol is one kind of — (A) Saturated fatty acid (B) unsaturated fatty acid (C) Steroid (D) Diglyceride 15. Ethyl-alcohol is mixed completely with water. How ethyl alcohol is separated from the mixture ? (A) by separation flannel (B) by evaporation (C) partial-distillation (D) evaporation of water 16. White vitriol is — (A) FeSO4, 7H2O (B) ZnSO4, 7H2O (C) MgSO4, 7H2O (D) CuSO4, 7H2O


www.ibpsexam.co.in 17. C.T. Scanning uses — (A) Ultrasound waves (B) Gamma rays (C) X-rays (D) None of the above 18. Chemically ‘speropolenin’ is a / an — (A) co-polymer of carotinoid and fatty acid (B) Carbohydrate (C) Propene (D) Lactic acid 19. A mixture of salt and sand can be separated by — (A) Sublimation (B) Dissolving water (C) Gravity separation (D) Dry distillation 20. Saponification involves the hydrolysis of fats and oils by — (A) water (B) washing soda (C) stearic acid (D) caustic soda 21. Photo-synthesis is a/ an — (A) exothermic process (B) endothermic process (C) a neutral process (D) a thermostatic process 22. Which of the following is a physical change ? (A) oxidation (B) reduction (C) sublimation (D) decomposition 23. Which of the following is not a chemical reaction ? (A) Burningof paper (B) Digestion of food


www.ibpsexam.co.in (C) Conversion of water into steam (D) Burning of coal 24. Which of the following is a chemical change ? (A) Rusting of iron (B) Tempering of iron (C) Melting of iron (D) Bending of iron 25. Photoelectric effect was discovered by — (A) Einstein (B) Hertz (C) Bohr (D) Plank Answers: 1. (B) 2. (A) 3. (C) 4. (A) 5. (D) 6. (C) 7. (B) 8. (D) 9. (A) 10. (A) 11. (C) 12. (B) 13. (C) 14. (A) 15. (C) 16. (B) 17. (A) 18. (A) 19. (B) 20. (D) 21. (B) 22. (C) 23. (C) 24. (A) 25. (A)

1. The penetrating power is maximum in — (A) a-rays (B) b-rays (C) g-rays (D) cathode rays 2. Which of the following rays carry no charge ? (A) Cathode rays (B) X-rays (C) a-rays (D) Positive rays 3. An atom bomb is based on the principle of — (A) Chemical reaction (B) Chain reaction in the form of fission (C) Nuclear fusion (D) None 4. A plant cell differs from an animal cell in the absence of — (A) mitochondria


www.ibpsexam.co.in (B) centrioles (C) ribosomes (D) endoplasmic reticulum 5. A Vitamin, the absence of which leads to sterility in both males and females is — (A) Vitamin K (B) Vitamin C or ascorbic acid (C) Vitamin D or calciferol (D) Vitamin E or tocopherol 6. Anaemia is caused in man due to the deficiency of — (A) folic acid (B) vitamin A (C) vitamin B12 (D) none 7. Antibiotics are drugs used for the cure of — (A) Bacterial diseases (B) Cancer (C) Malaria (D) Nervous disorders 8. Blood does not coagulate inside the body due to the presence of — (A) haemoglobin (B) heparin (C) fibrin (D) plasma 9. Blood pressure is dependent on — (A) systolic force (B) cardiac output (C) peripheral resistance (D) all of these 10. Which of the following substances undergoes chemical change on heating ? (A) Sodium chloride (B) Silica (C) Lead nitrate (D) Platinum wire 11. Vulcanisation is a — (A) Science of studying volcanoes (B) method of degrade polymers (C) Process connected with the making of voltaic cells


www.ibpsexam.co.in (D) Process of hardening of rubber by heating it with sulphur. 12. Water gas is prepared by passing — (A) steam over white-hot coke (B) air over red-hot coke (C) methane over red-hot coke (D) steam over heated sulphur 13. Which of the following gases is obtained by the reaction of water with calcium carbide — (A) Acetylene (B) Ethylene (C) Methane (D) Water gas 14. Cooking oil can be converted into vegetable ghee by the process of — (A) oxidation (B) hydrogenation (C) distillation (D) crystalisation 15. The contact process is involved in the manufacture of — (A) nitric acid (B) Sulphuric acid (C) Ammonia (D) Caustic soda 16. Polythene is industrially prepared by the polymerisation of — (A) methane (B) styrene (C) acetylene (D) ethylene 17. Combustion is a process by which — (A) heat is produced (B) light is produced (C) heat and light both are produced (D) None of these 18. PVC is obtained by the polymerisation of — (A) propane (B) vinyl chloride (C) styrene (D) Acetylene


www.ibpsexam.co.in 19. The process by which an organic compound breaks down into simpler compounds on heating to high temperature is known as — (A) Aromatisation (B) Polymerisation (C) Pyrolysis (D) Reduction 20. The hydrogenation of the vegetables oils takes place in the presence of finely divided — (A) aluminium (B) charcoal (C) silica (D) nickel 21. In which of the following processes light energy is converted into chemical energy ? (A) Respiration (B) Fermentation (C) Photosynthesis (D) Photorespiration 22. Rusting of iron involves — (A) oxidation (B) reduction (C) decomposition (D) displacement 23. LPG contains — (A) Butane and isobutene (B) Butane and Propane (C) Isobutane and Propane (D) Butane, Isobutane and Propane 24. The hormone which stimulates milk production in mammal is known as — (A) Glucagon (B) prolactin (C) progesterone (D) oestrogen 25. Antidiuretic hormone (ADH) — (A) inhibits the secretion of growth hormone by the pituitary (B) inhibits the rate of heart beat (C) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules. (D) causes an increase in the blood pressure


www.ibpsexam.co.in Answers: 1. (A) 2. (B) 3. (B) 4. (B) 5. (D) 6. (A) 7. (A) 8. (B) 9. (D) 10. (C) 11. (D) 12. (A) 13. (A) 14. (B) 15. (B) 16. (D) 17. (C) 18. (B) 19. (C) 20. (D) 21. (C) 22. (A) 23. (B) 24. (B) 25. (C)

901. Physical space occupied by an organism (and also its functional role in a community) is called: A. Niche B. Microhabitat C. Macrohabitat D. Habitat 902. Animals: Cockroaches, scorpions, ants, lizards, mice: which share their abode are called: A. Opportunists B. Inquilines C. Domestic ants D. Households 903. Generally succession leads to a climax community composed of: A. Grasses B. Shrubs C. Herbaceous flora D. Trees 904. The effect of interspecific competition on niches is to make them: A. smaller B. larger C. change location D. more triangular 905. The most effective defenses of plants against the herbivores are:


www.ibpsexam.co.in A. Morphological B. Temporal C. Chemical D. Developmental 906. When an organism is benefitted without affecting the other the relationship is termed: A. predation B. parasitism C. commensalism D. symbiosis 907. A flowering plant and the animal that pollinates it are examples of: A. Parasitism B. Mutualism C. Interspecific competition D. Commensalism 908. Animals which can tolerate only a narrow range of salinity are said to be: A. Euryhaline B. Stenohaline C. Catadromous D. Anadromous 909. Antagonistic interaction includes: A. Scavenging B. Competition C. Amensalism D. Both (B) and (C) 910. The most successful parasite is the one that: A. has a life cycle involving only one host B. is permanently attached to the host C. is highly specialized


www.ibpsexam.co.in D. makes minimum demands on the host 911. Lichens are described as indicators of: A. Air pollution B. Water pollution C. Xerophytic succession D. Mesophytic succession 912. In commensalism: A. One of the partners is benefitted at the cost of the second partner B. Both the partners are reciprocally benefitted C. One partner is benefitted and the other one is not at loss D. No partner is benefitted by the association 913. Lichens do not normally grow in cities: A. Because of absence of the right type of algae and fungi B. Because of lack of moisture C. Because of air pollution D. Because natural habitat is missing 914. Primary productivity of ecosystem refers to: A. increase in primary consumers B. net production of primary producers C. CO2 fixation of organic carbon D. increase in mortality of primary producers 915. The individuals in the uppermost ring pyramid represent the one with: A. maximum number B. maximum biomass C. the ultimate consumer in the chain D. minimum biomass


www.ibpsexam.co.in 916. Which of the following is a temporary parasite? A. Glochidium larva B. Tapeworm C. Entamoeba histolytica D. Entamoeba gingivalis 917. An association of a small fish (Fierasfer inhabiting in the cloaca of sea cucumber is an example of: A. amensalism B. parasitism C. mutualism D. commensalism 918. The animals which preys the other living species is known as: A. predator B. cannibalistic C. primary consumer D. parasite 919. An association of different interrelated populations belonging to different species in common environment which can survive in nature is called: A. Biotic community B. Population C. Herd D. Family 920. A direct food relation between two species of animals in which one animal kills and feed on another is referred to as: A. Predation B. Parasitism C. Symbiosis


www.ibpsexam.co.in D. Scavenging 921. An association of two species where one is benefitted and other remains unaffected or unharmed, it is called: A. Symbiosis B. Parasitism C. Predation D. Commensalism 922. An association of two species of organisms in which both the partners derive benefit from each other is called: A. Mutualism B. Commensalism C. Competition D. Parasitism 923. An association between a sea anemone Adamsia, and a hermit crab living in a gastropod shell is: A. Protocooperation B. Commensalism C. Mutualism D. Amensalism 924. The ecological niche of an organism denotes: A. habitat of the organism B. on whom the organism feeds C. the status of an organism within a particular community D. All of the above 925. The transition zone where two different types of communities meet is called: A. ecotype B. ecoline


www.ibpsexam.co.in C. ecotone . D. ecosystem 926. Mimicry is a device for: A. concealing from predator B. concealing from prey C both (A) and (B) D. becoming conspicuous 927. Generally the time taken for a secondary succession to reach climax stage is: A. 50-100 yrs. B. 150-200 yrs. C. 250-300 yrs. D. 350-400 yrs. 928. The philosophy behind the existence of a community is: A. Interaction B. Co-existence C. Helotism D. Dominance by some 929. The sum of the population of the same kind constitutes a: A. Species B. Genus C. Colony D. Community 930. What could be the meeting point of biological and ecological hierarchies? A. Organism B. Population C. Family D. Genus 931. Plants which are attached to stones and rocks: A. Aerophytes


www.ibpsexam.co.in B. Psammophytes C. Halophytes D. Lithophytes 932. A community is: A. Autotrophs and heterotrophs B. Collection of plants and animals C. Organisms living in a habitat D. Web of life 933. Plants growing well in hill crevices are: A. Lithophytes B. Ermophytes C. Chasmophytes D. Psammophytes 934. One of the following relationships is useful to one organism and of no significance to other: A. Commensalism B. Parasitism C. Mutualism D. Amensalism 935. Which of the following is a negative interaction between the populations? A. Symbiosis B. Mutualism C. Parasitism D. Commensalism 936. An ecological community is an assemblage of: A. Food webs B. Food chains


www.ibpsexam.co.in C. Closely related species D. Interacting population 937. The conversion of a lake to a terrestrial community is a form of: A. Primary succession B. Secondary succession C. Late secondary succession D. None of the above 938. Growth of Tagetes frees the soil of: A. Most nematodes B. Most weeds C. Most pathogens D. Fungal pathogens 939. Relationship between water-fern Azolla and nitrogen fixing cyanobacterium Anabaena is: A. Parasitic B. Symbiotic C. Predation D. Competition 940. Gause's hypothesis/principle is related to: A. Principle of competitive exclusion B. Niche specialisation C. Inter-specific competition D. All of the above 941. The relationship between one species and another within a community that has evolved through interactions is based upon: A. Requirement and mode of obtaining food only B. Requirement and mode of obtaining shelter only


www.ibpsexam.co.in C. On the habits of the species only D. All of the above 942. Antelopes are: A. Fungivorous B. Herbivores C. Carnivorous D. None of the above 943. The kind of climax community in an area depends mostly on: A. food of available colonist B. soil organisms G climate D. bed rock 944. Information of birth rate, death rate, ex ratio, age distribution of population can be got from: A. Nasality table B. Mortality table C. Age distribution table D. Life table 945. In a population where competition between individuals is severe than the distribution is said to be: A. Random B. Uniform C. Regular D. Non-random 946. Generally succession leads to a climax community composed of: A. Grasses B. Shrubs C. Herbaceous


www.ibpsexam.co.in D. Trees flora 947. Female anopheles mosquitoes sucking human blood at intervals are: A. Permanent parasite B. Endoparasites C. Intermittent parasites D. Hemiparasites 948. Organisms sharing a common environment belong to same: A. Community B. Genus C. Species D. Population 949. A prey population can weaken the search image of its predator by being: A. polymorphic B. conspicuous C. in a clumped pattern of dispersion D. all the same size and colour 950. The effect of interspecific competition on niches is making them: A. smaller B. larger C. change location D. more triangular Answers: 901

902

903

904

905

906

907

908

909

910

A

B

D

A

A

C

B

B

D

D

911

912

913

914

915

916

917

918

919

920


www.ibpsexam.co.in A

C

C

C

C

A

D

A

A

A

921

922

923

924

925

926

927

928

929

930

D

A

B

C

C

C

A

A

A

A

931

932

933

934

935

936

937

938

939

940

D

C

C

A

C

D

A

A

B

D

941

942

943

944

945

946

947

948

949

950

D

B

C

D

A

D

C

A

C

A

NORMAL BODY TEMPERATURE - 98.4F BLOOD GROUP CALLED "UNIVERSAL DONOR " - O GROUP CIRCULATORY SYSTEM’S POWER SUPPLY - HEART ORGAN REMOVES WASTES AND EXCESS WATER FROM THE BLOOD - KIDNEY STUDY OF TWINS - GEMELLOLOGY NATIONAL SCIENCE DAY - FEBRUARY 28 NUMBER OF BONES IN THE HUMAN BODY - 206 "BLOOD GROUP CALLED "UNIVERSAL RECIPIENT " - AB GROUP SIGNIFICANCE OF FEBRUARY 28 ( SCIENCE DAY) - DISCOVERY OF RAMAN EFFECT FIRST ANTIBIOTIC DRUG - PENCILLIN WORLDS BIGGEST WATER PLANT - AMAZON WATER LILLY ORGAN CONTROLS BODY TEMPERATURE - SKIN HARDEST SUBSTANCE IN THE HUMAN BODY - TOOTH ENAMEL DISEASE CAUSED BY THE BITE OF A MAD DOG - HYDROPHOBIA DEFICIENCY OF VITAMIN DLEADS TO - RICKETS A HUMAN HEART HAS HOW MANY CHAMBERS - FOUR THE BALANCING ORGAN OF OUR BODY - EAR WHAT IS CALLED SUICIDAL BAGS - LYSOSOME THE SMALLEST BONE IN THE HUMAN BODY - STAPES VITAMIN WHICH IS PRODUCED BY THE SUNLIGHT - VITAMIN D THE COLOURING PIGMENT OF BILE? - BILIRUBINE THE ENZYME WHICH DIGEST THE PROTEIN? - PEPSIN


www.ibpsexam.co.in THE ENZYME WHICH DIGEST THE FAT ? - LIPASE THE ENZYME WHICH DIGEST THE STARCH? - AMYLASE WHICH WAS THE FIRST METAL MADE BY MAN? - COPPER WHICH IS KNOWN AS ANIMAL STARCH? - GLYCOGEN UNIT OF LOUDNESS OF SOUND? - DECIBEL UNIT OF ELECTRIC CURRENT? - AMPERE STEAM ENGINE? - JAMES WATT RADIO ACTIVITY ? - HENTRY BECQUEREL FIRST HEART TRANSPLANT OPERATON? - CHRISTAIN BARNARD THE FIRST INDIAN SATELLITE? - ARYBHATTA INDIAS FIRST NUCLEAR EXPLOSION? - POKHRAN NOBEL PRIZE IN CHEMISTRY AND PHYSICS? - MARIE CURIE CHARLS DARWIN BELONGS TO? - BRITAIN THEORY OF RELATIVITY - EINSTEIN QUANTUM THEORY - MAX PLANK X-RAYS - RONTGEN DNA DOUBLE HELIX MODEL - WATSON AND CRICK DEFICIENCY OF VITAMIN C LEADS TO - SCURVY PROLONGED BLEEDING DUE TO - DEFICIENCY OF VITAMIN K TO MEASURE ATMOSPHERIC PRESSURE - BAROMETER STUDY OF BIRDS - ORNITHOLOGY STAMP COLLECTION - PHILATELY STUDY OF COINS - NUMISMATICS SCIENCE OF OLD AGE - GERENTOLOGY ANTI TUBERCULOSIS VACCINE - BCG DRY ICE - SOLID CARBON DIOXIDE GREEN PIGMENT IN PLANT LEAF - CHLOROPHYL ALZHEIMER DAY OBSERVED IN - SEPTEMBER 21 ASTRONOMICAL MEASURE OF DISTANCE - LIGHT YEAR NATURE AND PROPERTIES OF LIGHT - OPTICS POMOLOGY IS THE STUDY OF – FRUITS

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The study of bones is called ostelogy Total no of bones 206 Smallest bone-Stapes (ear boe) Longest bone-Femus (Thigh bone) Strongest bone-Tibia (leg bone)


www.ibpsexam.co.in Total no of muscles-639 Largest grand-liver Longest gland-thyroid Longest nerve-Sciatic Hardest bone-Tooth enamal Tolal amount of blood in the body is (1/15 of body weight) Normal body Temperature-98.6F (37C)

1. The word 'science' comes from the latin word 'scientia' means 'to know' 2. Thermodynamics deals with heat transfer and the conversion of heat to useful work through physical movement or chemical reaction 3. Acoustics is study of sound waves 4. Basic natural Forces are four in number .Gravitaional Force, Electromagnetic Force, Weak Nuclear force and strong nuclear force 5. Quantum physics studies about the structure and behaviour of atoms. 6. Biophysics studies about the physics of living organisms 7. Chemistry is divided in to two - Inorganic and organic chemistry 8. Inorganic Chemistry is the study of the preparation, properties and reactions of all chemical elements and their compounds, except those contain carbon. (However some simple carbon compounds such as carbonates, carbides and carbon oxides come under inorganic chemistry. 9. Organic Chemistry studies relation of carbon compounds. Carbon forms the main constituent of protein, fat and carbohydrate etc. 10.Analytical chemistry deals with the composition of substances. 11.Physical chemistry studies about the structure of matter, 12.Electrochemistry- chemical changes due to electric currents 13.Photochemistry - Chemical reaction caused by the interaction of light and matter 14.Biochemistry - Chemical processes inside living organisms 15.Astrochemistry -origin of the chemical constituents of universe 16.Father of biology - Aristotle 17.The term 'biology' was first used by Lamarck (France) and Trevirenus (Germany) in 1801 18.The term 'botany' comes from greek word 'boskin' which means grassing 19.Theophrastus is called as the father of botany 20.Morphology -structure of living organisms


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General Science

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