1. Name the gas which is found in abundance in earth in both combine and free state with other elements?
A. Oxygen
B. Nitrogen
C. Hydrogen
D. Sulphur
Ans. A
2. Name an inert diatomic gas which is neither combustible nor helps in combustion?
A. Carbon Dioxide
B. Hydrogen
C. Nitrogen
D. None of the above
Ans. C
3. Name a gas which is used in refrigeration and in fire extinguisher?
A. Nitrogen
B. Hydrogen
C. Carbon Dioxide
D. Methane
Ans. C
4. Name a gas which is used in the manufacture of vanaspati ghee, alcohol and ammonia?
A. Hydrogen
B. Oxygen
C. Propane
D. Butane
Ans. A
5. Name a gas used as rocket propellant and in welding also?
A. Ether
B. Neon
C. Hydrogen
D. Cyanogen
Ans. D
6. Name a tear gas which is used in riots?
A. Ethylene
B. Krypton
C. CS gas
D. Nitrous Oxide
Ans. C
7. Name a gas used in high speed photography?
A. Nitrous Oxide
B. Krypton
C. Xenon
D. Radon
Ans. B
8. Name a gas which is separated from the air by passing an electric current through water?
A. Carbon Dioxide
B. Oxygen
C. Butane
D. Nitrogen
Ans. B
9. Name a gas which is used in the fermentation of sugar?
A. Ammonia
B. Butane
C. Propane
D. Carbon Dioxide
Ans. D
10. Name a gas which is used in making chloroform?
A. Methane
B. Propane
C. Butane
D. Acetylene
Ans. A