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Question
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
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Solution
\[\ce{2Al + 2KOH + 2H2O->2KAlO2 + 3H2}\]
\[\ce{Zn + 2KOH->K2ZnO2 + H2}\]
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RELATED QUESTIONS
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 Question
The metal which reacts with cold water to produce hydrogen is
FILL IN THE BLANK
........................... means ‘maker of water’ in Greek.
For laboratory preparation of hydrogen, give the following:
chemical equation
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
Where does hydrogen occur in a free state?
Starting from hydrogen gas how would you obtain a metal by reduction of its heated oxide.
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen chloride
Give a balanced equation for the following conversion.
\[\ce{CO + H2<-H2O->CO2 + H}\]
