Question:
Which among the following compounds is used as catalyst in Raschig method for preparation of phenol?
Which among the following compounds is used as catalyst in Raschig method for preparation of phenol?
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Calcium phosphate is used as a catalyst in the Raschig method for the preparation of phenol.
Updated On: Feb 9, 2026
- Calcium Sulphate
- Calcium phosphate
- Calcium chloride
- Calcium carbonate
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Raschig method.
In the Raschig method for phenol preparation, a catalyst like calcium phosphate is used to catalyze the reaction between benzene and chlorine to form phenol.
Step 2: Analyzing the options.
(A) Calcium Sulphate: Incorrect. Calcium sulphate is not used in the Raschig method for phenol preparation.
(B) Calcium phosphate: Correct. Calcium phosphate is the catalyst used in the Raschig method for phenol preparation.
(C) Calcium chloride: Incorrect. Calcium chloride is not used in this process.
(D) Calcium carbonate: Incorrect. Calcium carbonate is not involved in this method.
Step 3: Conclusion.
The correct answer is (B) Calcium phosphate.
In the Raschig method for phenol preparation, a catalyst like calcium phosphate is used to catalyze the reaction between benzene and chlorine to form phenol.
Step 2: Analyzing the options.
(A) Calcium Sulphate: Incorrect. Calcium sulphate is not used in the Raschig method for phenol preparation.
(B) Calcium phosphate: Correct. Calcium phosphate is the catalyst used in the Raschig method for phenol preparation.
(C) Calcium chloride: Incorrect. Calcium chloride is not used in this process.
(D) Calcium carbonate: Incorrect. Calcium carbonate is not involved in this method.
Step 3: Conclusion.
The correct answer is (B) Calcium phosphate.
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