Chemistry
The gas collected by downward displacement of air is
- HCl
- NH3
- CO2
- H2S
Ammonia
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Answer
NH3
Reason — Ammonia (NH3) gas is collected in inverted gas jars by downward displacement of air because it is lighter than air.
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Nitrogen gas can be obtained by heating
- Ammonium nitrate
- Ammonium nitrite
- Magnesium nitride
- Ammonium chloride
Ammonia can be obtained by adding water to:
- NH4Cl
- Mg3N2
- Mg (NO3) 2
- (NH4)2 SO4
In the Haber's process, the ratio of reactants nitrogen and hydrogen is:
- 2 : 3
- 3 : 2
- 1 : 3
- 3 : 1
When ammonia reacts with an excess of chlorine, the main product formed is:
- NH4Cl
- NCl3
- Cl2
- HCl