OBJECTIVE 1. Number of carbon atoms in olvanil
C26H43NO3
2. Definition of ozonolysis an organic reaction where the unsaturated bonds of alkenes, alkynes, or azo compounds are cleaved with ozone. 3. Edman degradation, degradation, developed by Pehr Edman, is a met hod of sequencing amino acids in a peptide. 4. Nearest layer of the atmosphere from the earths surface ( troposphere troposphere,, stratosphere, mesosphere, thermosphere) 5. Chemical formula for 11-tetradecenyl acetate C16H30O2 6. Common contaminant on BTEx process benzene, benzene, toluene, toluene, ethylbenzene, ethylbenzene, and and xylenes xylenes 7. What is the other name for bulk temperature mixing cup temperature 8. Where does an enzyme capsaicin commonly found capsicum 9. Common method for the removal of fine particle in hot airstream common in cement production (ESP (ESP,, buoyancy, cyclone, venturi scrubber) 10. What is the method that Wohler do to break the vital force theory t heory in nature? Heating NH4Cl with AgCN to form urea 11. What is the common form of nitro-glycerol? Nitroglycerin 12. Definition of polar covalent bond A bond in which electrons are shared betwe en elements having a difference in electronegativity of between 0.5 and ~2.0. 13. Arrange in increasing melting point (oleic, (oleic, palmitic, stearic,) stearic,) 14. What is the difference between catabolism, anabolism and metabolism? Cata-the breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy, ana- the synthesis of complex molecules in living organisms from simpler ones toget her with the storage of energy 15. What law is PRC modernization act? REPUBLIC ACT NO. 8981 16. Primary use of ethylene ripening of fruits 17. What happen to the pH of carbonated drinks if it open in atmospheric condition? ( increase increase,, decrease, same, cant be determined) 18. Formula red lead Lead(II,IV) lead Lead(II,IV) oxide 19. Process of breaking down a large isotope into smaller isotopes (nuclear (nuclear fission, fission, beta particle emission, nuclear fusion, gamma ray emission) 20. Author of octet rule gilbert lewis 21. Adolf baeyers contribution in medicine, made by reacting malonic acid and urea with a catalyst is called? barbituric acid 22. Which layer of the atmosphere contains the ozone layer? Stratosphere 23. Composition of acid in acid rain? sulphuric and nitric acids 24. How to differentiate alkane, alkene and alkyne? (combustion in empty beaker, nature of C and its branching, reaction with Br2 25. Formula of alar C6H12N2O3 26. Arrange in increasing toxicity level (heptachlor , dieldrum , Cr, DDT, ar senic) 27. Polymer use in bullet proof vest Linear Polyethylene
28. How do you differentiate electromagnetic radiation? o Wavelength o Photons o Frequency o Energy 29. Who discovered resonance? o Alfred Nobel o Linus Pauling (ans) o Immanuel/Emmanuel? o Le Chatelier 30. Functional groups in thiotic acid carboxylic group 31. Definition of functional group specific groups of atoms or bonds within molecules that are responsible for the characteristic chemical react ions of those molecules 32. Product of reaction between acyl halide and an alcohol – (ans. Ester)-also came out twice 33. In stem cell studies, a chemical known as telomeres is attached to the chromosome to promote longer life. How would you apply this as a chemical engineer in the field of agriculture and food? Ans: Genetically enhance plants to prolong shelf life. 34. What is the first step in utilizing proteins? Ans: Hydrolysis 35. Liquid Nitrogen is placed in an Erlenmeyer flask. Hard-boiled egg is then placed on top of the opening, what will happen? o Egg will pop out o Nothing o Egg will be sucked in o The egg will break. Ans: Egg will be sucked in. Note: The liquid Nitrogen being extremely cold would lower the pressure in the Erlenmeyer, creating a vacuum for the egg to be suctioned in. 36. You are an environmental engineer sent to a place with the cholera epidemic, what the best thing to do? o Care for the sick o Treat water supply o Assess the environmental aspect o None of the above Ans: Treat water supply 37. What are plasmids? Ans: Plasmids are small DNA molecules within a cell that are physically separated from a chromosomal DNA and can replicate independently 38. The Nobel Prize for radioactivity discovery was shared between C urie and Roentgen. Who coined the word “serendipity” in 1754? Ans: Horace Walpole 39. What is the chemical used in sunblock? o Al2O3 o ZnO Ans: ZnO 40. Ketone and aldehyde in alcohol will form? Ans: Acetals/Ketals 41. What is the formula of aspirin? Aspirin is acetylsalicylic acid – acetyl + benzene ring + acetyl substituent on the benzene ring 42. What is gluconeogenesis? Formation of glucose from non-carbohydrate sources. 43. Why carbon dating? Because C14
44. Can oxygen be synthesized from nitrogen? (yes,by the bombardment of alpha particles: yes,by electron capture: impossible) 45. Which element is difficult to remove from sewage and wastewater and at the same time, it contributes to bacterial and algae overgrowth in freshwater? ( oxygen, lead, carbon, nitrogen) 46. There are approximately 20 amino acids in human protein. Name 3 esse ntial amino acids Proline, glutamine, aspargine Aspartic acid, glutamic acid, serine Arginine, lysine, phenylalanine Glycine, arginine, glutamic acid 47. How do two free radicals react when they encounter each other? They unite to form double bonds They unite to form double or triple bonds They unite with covalent bond formation They repel each other 48. Hydrolysis of acetylcholine 49. Number of acetic acid formed by complete beta oxidation of n-octane 50. Role chemical engineering in biosynthetic pathways 51. Nucleophile of chymotrypsin reaction 52. Amino acid sequence can exist at pH 9 .5 but not in pH 7. 53. Value of plancks constant 54. Which of the ff doesn’t have chiral center or cis -trans 3-methylcyclohexanol 1-methylcycohexanol Cis-4-methylcyclohexanol Trans-4-methylcyclohexanol 55. How does alpha, beta and gamma particle affect the mass number of an atom?no change 56. Pollutant produced from coal and petroleum CO2,CO,NOx 57. Who discovered x-ray Wilhelm Roentgen 58. Which is nuclear fusion ( the big bang, the radiant energy from sun, the formation of deuterium/tritium 59. Instrument in measuring Radiation Geiger Counter and Chamber 60. How many neutrons are there in C-14 8 61. Iodine vapor forms iodine crystals when it touches a cold surface, what is the reverse the process being described? Sublimation 62. Notation on alkane containing Cl ( chloro, choride, chlorate, chloric) 63. Description of primary cell and secondary cell A primary cell or battery is one that cannot easily be recharged after one use, A secondary cell or battery is one that can be electrically recharged 64. Particle with the same mass of proton? Neutron 65. This contains genetic information DNA RNA FAD
NAD 66. Why does carbon have a lot of alkyl substituent possibilities? o Four potentials of sharing (due to valence) o Cyclo/linear characteristics o All of the above 67. When will a pine tree grow in Alaska? o Not in a million years o It depends on the carbon dioxide o Greenhouse effect o All of the above. 68. What happens to the melting point of a saturated fatty acid if -CH2- is increased? ( increase, decrease, the same, none of these?) 69. What compound is a ketone but is not a carbohydrate but is useful commercially? ( ethyl alcohol, glucose, benzaldehyde, acetone) 70. Most negative ion o FoClo BrAns: F71. What is the chemical engineer’s role in biosynthetics in Bioengineering? 72. Where is water quality critical? o Water infused with product o Water used in the industry Ans: Most plausible choice is “water infused with product” 73. What is an aminosugar? Three other choices were EXAMPLES of aminosugars (D-glucosamine, D-mannosamine, and I forgot the third) but letter A was the DEFINITION of aminosugar. Analyzing the question, the most probable action to be done is the DEFINITION. 74. Dehydration, or the removal of water w as done to C3H8O, and then the product violently reacted with Br2. What was the product? Choices were Propanol-1, Propanol-2, Propene, and Propanol. It is obvious that propene is the answer 75. Which has a larger ionic nucleus?Na+ of Na? ( both, Na+, Na, none of these) 76.
