Question:

The correct statements about \(\mathrm{H_2O_2}\) 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 :

Show Hint

H2O2 has a non-planar open-book structure, so statement (C) is false.
Updated On: Nov 4, 2026
  • (A), (C) and (D) only
  • (A), (B), (C) and (D)
  • (A), (B) and (D) only
  • (B), (C) and (D) only
Show Solution
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The Correct Option is C

Solution and Explanation

(A) True: \(\mathrm{H_2O_2}\) is used to treat industrial effluents and sewage (oxidises pollutants).
(B) True: oxygen is in the \(-1\) state, so it can be reduced to \(-2\) (oxidant) or oxidised to 0 (reductant).
(C) False: \(\mathrm{H_2O_2}\) has an open-book, non-planar structure (dihedral angle about 111.5 degrees in the gas phase), so the two O-H groups are not in the same plane.
(D) True: it is miscible with water in all proportions due to hydrogen bonding.
Correct: (A), (B) and (D) only.
Answer: (3) (A), (B) and (D) only
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