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Question
Give reason for the following:
Though hydrogen is lighter than air it cannot be collected by downward displacement of air.
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Solution
Since hydrogen is lighter than air. it is possible to collect the gas by downward displacement of air. But it is not safe to do so since a mixture of hydrogen and air can lead to an explosion.
RELATED QUESTIONS
Hydrogen is ______ than air.
Fill in the blank
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Match the statements in Column A with those in Column B.
| Column A | Column B |
|
1. A metal which reacts with cold water to from hydrogen. |
1. Reduction |
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|
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|
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