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प्रश्न
Name the following:
Two metals which give hydrogen with cold water.
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उत्तर
Sodium (Na) and Potassium (K) give hydrogen with cold water.
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संबंधित प्रश्न
Fill in the blank
Hydrogen reacts with metal oxides to form ............and....................
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 |
TRUE \ FALSE
reacts with hot water to form copper oxide and hydrogen.
Choose the correct option:
Elements which show unique nature in the preparation of hydrogen are:
Where does hydrogen occur in a free state?
Complete and balance the following reaction.
Mg + H2O →_____________ +___________
Select the correct options for the following statement:
The metallic compound formed when a metal above aluminium in the activity series reacts with steam.
Select the correct options for the following statement:
The product formed on combustion of hydrogen in air is ___.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Magnesium - Mg + H2O → ______+ _______ [g]
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen chloride
