GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following gases is lighter than air?
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Oxygen
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Carbon dioxide
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Chlorine
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Ammonia
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Explanation:
Detailed explanation-1: -The vapour density of ammonia is 8.5 and that of air is 14.4. The two gases lighter than ammonia are1. hydrogen2. helium.
Detailed explanation-2: -Ammonia gas is lighter than air and will rise, so that generally it does not settle in low-lying areas. However, in the presence of moisture, ammonia can form vapors that are heavier than air. These vapors can spread along the ground or other low-lying areas.
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