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प्रश्न
Select the correct options for the following statement:
The product formed on combustion of hydrogen in air is ___.
विकल्प
water gas
water
producer gas
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उत्तर
The product formed on combustion of hydrogen in air is water.
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संबंधित प्रश्न
Fill in the blank
Hydrogen is ..................... than air.
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
Which metal is preferred for the preparation of hydrogen?
from acid?
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
Name the electrode –
- through which the current enters the electrolyte.
- at which hydrogen is liberated.
Give reason for the following:
In the preparation of hydrogen by electrolysis of water – the distilled water used is acidified.
Select the correct options for the following statement:
The metal used as a catalyst in hydrogenation of oils.
State why hydrogen is not prepared in the laboratory by the action of sodium with cold water.
Give a reason for the following.
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
