The gas which turns into liquid at the lowest temperature among the following is (1) hydrogen (2) oxygen (3) helium (4) nitrogen Answer : hydrogen...
Which one of the following elements is an example of noble gas ? (1) Nitrogen (2) Hydrogen (3) Chlorine (4) Helium Answer : Helium...
Water gas is the mixture of (1) carbon dioxide and hydrogen (2) carbon monoxide and nitrogen (3) carbon monoxide and hydrogen (4) carbon dioxide and nitrogen Answer : carbon monoxide and hydrogen...
Hydrogen is not found in atmosphere because (1) it is highly inflammable (2) it is the lightest gas (3) it is absorbed by plants (4) it immediately combines with oxygen to form water Answer : it is the lightest gas...
Which one of the following is a greenhouse gas ? (1) Nitrogen (2) Helium (3) Carbon dioxide (4) Sulphur dioxide Answer : Carbon dioxide...
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