The pigment responsible for browning of
a) hydrated iron (II) oxide
5. Brine is a concentrated solution of
a) sodium sulphate b) sodium chloride
c) calcium chloride d) sodium bromide
6) Limestone contains
a) calcium chloride b) calcium carbonate
7. Which of the following factor induces
c) Coppe
II.
1.
action.
apples is
b) melanin
2.
d) ozone
c) starch
3.
Hanimals
4.
5.
mainly.
6.
c) calcium nitrate
d) calcium sulphate
I
action.
electrtolysis?
1.
a) Heat
c) Electricity
2.
b) Light
d) Catalysis
8. In Haber's process of producing ammonia
is used as a catalyst.
a) nitrogen
b) hydrogen
c) iron
d) nickel
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