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MARKING SCHEMES- CHAPTER 4 (THE VARIETY RESOURCES ON EARTH )
QUES 1 a
b c
2
a
b c.
3
a
b c
d
4
e a b
CHARACTERISTICS i. P : compound Q : mixture R : element i. Substance Q : blood Substance R : gold , copper , diamond i. [ accept suitable answer )
ii. i. M : N : O :
MARKS
3
2 3 1
9
[ √ ] compound mixture element
ii. by electrolysis Hard / shiny / malleable / can be polished / good conductor of heat / good conductor c onductor of electric i. K : element L : compound ii. Substance K : gold , iron Substance L : water , carbon dioxide P : Sulphur, Q : Iron Oxide, R : Carbon dioxide, S : oxygen
Elements are substances that are made up of only one type of atom P & S = element Q = mixture R = compound i. water ii. blood / soil By sieving , filtration ( accept any suitable answer ) Q : compound P : element R : iron , gold
