1.The charcoal use to de colourise raw sugar is
a) Animal charcoal
b) Sugar charcoal
c) Coconut charcoal
d) Wood charcoal
2) The most abundant metal in the earth’s crust is
a) Zinc
b) Copper
c) Aluminium
d) Iron
3) Production of Chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products ?
a) Television
b) Tube light
c) Cooking gas
d) Refrigerator
4) The gas used to extinguish fire, is
a) Neon
b) Nitrogen
c) Carbon dioxide
d) Carbon monoxide
5) In which of the following activities silicon carbide is used ?
a) Making cement and glass
b) Disinfecting water of ponds
c) Making casts for statues
d) Cutting very hard substances
6) The element common to all acids is
a) Carbon
b) Hydrogen
c) Oxygen
d) Sulphur
7) Gobar gas contains mainly
a) Methane
b) Carbon Dioxide
c) Butane
d) Carbon monoxide
8) The most malleable metal is
a) Silver
b) Gold
c) Aluminium
d) Sodium
9) Tetra-ethyl lead is used as
a) Mosquito repellent
b) Painkiller
c) Fire extinguisher
d) Petrol additive
10) Which of the following is used in beauty parlours for hair setting?
a) Chlorine
b) Sulphur
c) Phosphorus
d) Silicon
Answers will be provided soon..!!!
a) Animal charcoal
b) Sugar charcoal
c) Coconut charcoal
d) Wood charcoal
2) The most abundant metal in the earth’s crust is
a) Zinc
b) Copper
c) Aluminium
d) Iron
3) Production of Chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products ?
a) Television
b) Tube light
c) Cooking gas
d) Refrigerator
4) The gas used to extinguish fire, is
a) Neon
b) Nitrogen
c) Carbon dioxide
d) Carbon monoxide
5) In which of the following activities silicon carbide is used ?
a) Making cement and glass
b) Disinfecting water of ponds
c) Making casts for statues
d) Cutting very hard substances
6) The element common to all acids is
a) Carbon
b) Hydrogen
c) Oxygen
d) Sulphur
7) Gobar gas contains mainly
a) Methane
b) Carbon Dioxide
c) Butane
d) Carbon monoxide
8) The most malleable metal is
a) Silver
b) Gold
c) Aluminium
d) Sodium
9) Tetra-ethyl lead is used as
a) Mosquito repellent
b) Painkiller
c) Fire extinguisher
d) Petrol additive
10) Which of the following is used in beauty parlours for hair setting?
a) Chlorine
b) Sulphur
c) Phosphorus
d) Silicon
Answers will be provided soon..!!!
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