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The correct statements about H2O2 are: (A) used in the treatment of effluents. (B) used as both oxidising and reducing agents. (C) the two hydroxyl groups lie in the same plane. (D) miscible with water. Choose the correct answer from the options given below:

1. (A), (B), (C) and (D)
2. (A), (B) and (D) only
3. (B), (C) and (D) only
4. (A), (C) and (D) only

Correct answer: (A), (B) and (D) only

Solution

Options (A), (B), and (D) are correct because hydrogen peroxide (H2O2) is indeed used in effluent treatment, can act as both an oxidizing and reducing agent, and is miscible with water. However, option (C) is incorrect as the two hydroxyl groups in H2O2 are not in the same plane due to the molecule's non-planar structure.

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