Evolution of gas
Evolution of gas
Evolution of gas:
Some of the chemical reactions occur with the evolution of a gas or a mixture of gases. For example,
When lead nitrate is heated, it gets decomposed to give a solid residue of lead monoxide with the evolution of ____________________ gases. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) The chemical reaction between zinc and dilute sulphuric acid is characterized by the evolution of hydrogen gas. (b) Metals like zinc, magnesium, iron etc react with dilute hydrochloric acid with the evolution of carbon dioxide gas. (c) When lead nitrate is heated, it gets decomposed to give a solid residue of lead monoxide with the evolution of nitrogen dioxide and oxygen gases.
| |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) Some of the chemical reactions occur with the evolution of a gas or a mixture of gases. (b) Metals like zinc, magnesium, iron etc react with dilute hydrochloric acid with the evolution of hydrogen gas. (c) The chemical reaction between zinc and dilute sulphuric acid is characterized by the evolution of oxygen gas. | |||
| Right Option : A | |||
| View Explanation | |||
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