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
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
3.
Name a gas which is used in refrigeration and in fire extinguisher
A.
Nitrogen
B.
Hydrogen
C.
Carbon Dioxide
D.
Methane
4.
Name a gas which is used in the manufacture of vanaspati ghee, alcohol and ammonia
A.
Hydrogen
B.
Oxygen
C.
Propane
D.
Butane
5.
Name a gas used as rocket propellant and in welding also
A.
Ether
B.
Neon
C.
Hydrogen
D.
Cyanogen
6.
Name a tear gas which is used in riots
A.
Ethylene
B.
Krypton
C.
CS gas
D.
Nitrous Oxide
7.
Name a gas used in high speed photography
A.
Nitrous Oxide
B.
Krypton
C.
Xenon
D.
Radon
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
9.
Name a gas which is used in the fermentation of sugar
A.
Ammonia
B.
Butane
C.
Propane
D.
Carbon Dioxide
10.
Name a gas which is used in making chloroform
A.
Methane
B.
Propane
C.
Butane
D.
Acetylene
11.
Carbon dioxide is called a greenhouse gas because
A.
Its concentration remains always higher than other gases
B.
It is used in photosynthesis
C.
It absorbs infrared radiation
D.
It emits visible radiation
12.
What is the major role of a greenhouse gas that contributes to temperature rise of the earth’s surface?
A.
Transparent to both incoming sunlight and outgoing infrared radiation
B.
Stops both incoming sunlight and outgoing infrared radiation
C.
Lets outgoing infrared radiation pass through but stops incoming sunlight
D.
Lets incoming sunlight pass through but stops outgoing infrared radiation
13.
Consider the following statements: 1. Ozone is mostly found in the stratosphere. 2. Ozone layer lies 55-75 km above the surface of the Earth. 3. Ozone absorbs ultraviolet radiation from the Sun. 4. Ozone layer has no significance for life on the Earth. Which of the statements given above are correct?
A.
1 and 2
B.
1 and 3
C.
2 and 3
D.
3 and 4
14.
Which among the following nontoxic gases helps in formation of enzymes which ripen fruit?
A.
Acetylene
B.
Ethane
C.
Methane
D.
Carbon dioxide
15.
Which one among the following is strong smelling agent added to LPG (Liquefied petroleum gas) cylinder to help in the detection of gas leakage?
A.
Ethanol
B.
Thioethanol
C.
Methane
D.
Chloroform
16.
Which of the following statements regarding ozone layer within the atmosphere is/are correct? 1. It absorbs most of the ultraviolet radiation found in the Sun's rays. 2. Chloroflourocarbons are serious threat to the ozone layer. Select the correct answer using the code given below:
A.
1 only
B.
2 only
C.
Both 1 and 2
D.
Neither 1 nor 2
17.
The major component in LPG (liquefied petroleum gas) is
A.
methane
B.
butane
C.
ethane
D.
propane
18.
Which one of the following is a major constituent of Biogas?
A.
Carbon dioxide
B.
Methane
C.
Hydrogen
D.
Nitrogen Dioxide
19.
Nowadays, Yellow lamps are frequently used as street lights. Which among the following gases, is used in these lamps?
A.
Sodium
B.
Neon
C.
Hydrogen
D.
Nitrogen
20.
The Noble Gas used for the treatment of cancer is ___?
