Match the compounds in Column A with the method of preparation in Column B:
| Column A (Compound) | Column B (Made From) |
|---|---|
| A. Bleaching Powder | 1. Heating gypsum |
| B. Baking Powder | 2. Acid–base reaction |
| C. Washing Powder | 3. Chlorine gas and dry slaked lime |
| D. Plaster of Paris | 4. Heating baking soda and recrystallization of the resultant |
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. A–3, B–2, C–4, D–1.
The correct matching of compounds with their preparation methods is as follows:
Bleaching Powder is prepared using chlorine gas and dry slaked lime.
Baking Powder is formed through an acid–base reaction, typically involving baking soda and an edible acid.
Washing Powder is obtained by heating baking soda and recrystallizing the resultant compound.
Plaster of Paris is produced by heating gypsum at about 150°C. This systematic matching links each compound to its correct method of preparation accurately.