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प्रश्न
Why are the following metals not used in the lab. preparation of hydrogen?
sodium
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उत्तर
Sodium reacts violently with acid.
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
For laboratory preparation of hydrogen, give the following:
method of collection
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
How did the name 'hydrogen' originate?
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Complete and balance the following reaction.
Fe + H2O →_____________ +___________
Complete and balance the equation:
[Industrial Method - Bosch process]
- Step I - Production of water gas -
\[\ce{C + H2O->[1000°C]}\] [____ + ____] - Δ - Step II - Reduction of steam to hydrogen by carbon monoxide
\[\ce{CO + H2 + H2O->[450°C][Fe2O3]}\] _____ + ____ [g] - Step III - Removal of unreacted carbon dioxide and carbon monoxidefrom the above mixture
KOH + CO2 → _________ + ______
CuCl + CO + 2H2O → _______
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
