Q51 / 180 · KCET 2014 · Chemistry
A crystalline solid \( \mathrm{X} \) reacts with dil. \( \mathrm{HCl} \) to liberate a gas \( \mathrm{Y} . \mathrm{Y} \) decolourises acidified \( \mathrm{KMnO}_{4} \).
When a gas ' \( Z \) ' is slowly passed into an aqueous solution of \( Y \), colloidal sulphur is obtained. \( X \)
and \( Z \) could be, respectively
When a gas ' \( Z \) ' is slowly passed into an aqueous solution of \( Y \), colloidal sulphur is obtained. \( X \)
and \( Z \) could be, respectively
- A\( \mathrm{Na}_{2} \mathrm{SO}_{4}, \mathrm{H}_{2} \mathrm{~S} \)
- B\( N a_{2} S O_{4}, S O_{2} \)
- C\( \mathrm{Na}_{2} \mathrm{~S}, \mathrm{SO}_{3} \)
- Correct answerD\( N a_{2} S O_{3}, H_{2} S \)
Solution
The reactions involved are,
Hence, the correct answer is option: 'D'.