Chemistry
Grade-8
Easy
Question
As Hydrogen gas is explosive, the precaution that must take in the laboratory is that:
- Heating appliances should be turned off.
- The apparatus should be airtight.
- The gas should be collected at only the initial stage of formation
- Both A and B.
Hint:
Hydrogen gas is highly explosive and can catch fire easily. It should also not get contaminated by other gases in air.
The correct answer is: Both A and B.
The correct option is d)Both A and B.
Laboratories containing hydrogen are explosive and must rely on a combination of hydrogen containment, purging procedures to separate hydrogen from air and other oxidants, ventilation, and ignition source control to prevent explosions. This can be done by performing the experiment in airtight apparatus.
Never smoke near places where hydrogen is generated or used. Remove all potential sources of flames and sparks. Also turn off all the heating appliances near the apparatus.
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