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प्रश्न
The metal that will not produce hydrogen gas when reacted with dilute acids.
विकल्प
Iron
Lead
Magnesium sulphite
Ferric chloride
Zinc
Copper
Sodium sulphide
Ferrous sulphate
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उत्तर
Copper
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संबंधित प्रश्न
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains ______.
Name one natural source of the following acids:
Lactic acid
What happens when an acid reacts with a metal?
What ions are present in the solutions of following substances? (write the symbols only)
Nitric acid
What is the chemical formula of washing soda?
What happens when a solution of sodium hydrogencarbonate is heated? Write equation of the reaction involved.
State two uses each of the following compounds:
Sodium hydroxide
State two uses each of the following compounds:
Hydrochloric acid
Read the following statements:
I. When a red litmus paper is dipped into reaction mixture of a saponification reaction, it turns blue and the reaction is exothermic.
II. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is exothermic.
III. When a red litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
IV. When a blue litmus paper is dipped into reaction mixture of a saponification reaction, its colour does not change and the reaction is endothermic.
Which of the above statements are correct:
(A) I, and II
(B) II and III
(C) III and IV
(D) I and IV
In the following schematic diagram for the preparation of hydrogen gas as shown in the figure, what would happen if following changes are made?
- In place of zinc granules, same amount of zinc dust is taken in the test tube
- Instead of dilute sulphuric acid, dilute hydrochloric acid is taken
- In place of zinc, copper turnings are taken
- Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.
