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प्रश्न
A metal ______ hydrogen in the reactivity series gives hydrogen with ______.
उत्तर
A metal above hydrogen in the reactivity series gives hydrogen with dilute acids.
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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 |
What is noticed if the products are not allowed to escape?
For laboratory preparation of hydrogen, give the following:
materials used
Why are the following metals not used in the lab preparation of hydrogen?
calcium
State how hydrogen occurs in the free state. Name three compounds containing hydrogen in the combined state.
Starting from hydrogen gas how would you obtain a basic gas.
Select the correct options for the following statement:
The metallic compound formed when a metal above aluminium in the activity series reacts with steam.
State the electronic configuration of hydrogen [at. no. 1].e
Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Al2(SO4)3 + H2}\]
Give a balanced equation for the following conversion.
\[\ce{KAlO2<-KOH->K2ZnO2}\]
