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प्रश्न
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{MgO + H2}\]
पर्याय
dilute acid
dilute alkali
cold water
conc. alkali
boiling water
conc. acid
steam
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उत्तर
Reactant added to get the product:
\[\ce{MgO + H2:Boiling water}\]
APPEARS IN
संबंधित प्रश्न
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 |
| 2. A gas which is inflammable and non-supporter of combustion | 2. Hydrogenation |
|
3. A process in which vanspati ghee is prepared from vegitable oils |
3. oxidation |
|
4. The removal ofhydrogen or addition of oxygen |
4. sodium |
| 5. The addition of hydrogen or removal of oxygen | 5. Hydrogen |
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
How did the name 'hydrogen' originate?
Complete and balance the following reaction.
Mg + H2O →_____________ +___________
Complete and balance the following reaction.
Al + H2SO4 →_____________ +___________
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Zinc - Zn + 2HCl → ______ + _______ [g]
State the reactant added to hydrogen to obtain the respective product in following case.
Water
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
