The correct statements about $H_{2} O_{2}$ are:
(1) used in the treatment of effluents.
(2) used as both oxidizing and reducing agents.
(3) the two hydroxyl groups lie in the same plane.
(4) miscible with water.

(1), (3) and (4) only.
(1), (2) and (4) only.
(1), (2), (3) and (4)
(2), (3) and (4) only.

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Solution

The correct option is B
(1), (2) and (4) only.

The correct option is (B):
Explanation for the correct answer:
Introduction to $H_{2} O_{2}$ :
$H_{2} O_{2}$ stands for Hydrogen peroxide and basically is the simplest kind of the peroxide that is available which is colorless liquid and further is also used for the safety reasons.
In the chemical reaction, $H_{2} O_{2}$ can be reduced to the $H_{2} O$ as well as can be oxidized to the $O_{2}$ hence behaving as the reducing as well as the oxidizing agent.
It acts as an oxidizing agent in the reaction: $H_{2} O_{2} + 2 H^{+} + 2 e^{-} ⟶ 2 H_{2} O$ .
It acts as a reducing agent is the reaction: $H_{2} O_{2} ⟶ O_{2} + 2 H^{+} + 2 e^{-}$ .
As Hydrogen peroxide is the strong oxidizing agent so is can oxidize both the organic as well as the inorganic pollutants and so can be used in the treatment or the purification of the effluent.
When added to the water, it will get dissolved as such because of Hydrogen bonding that is strong between the Hydrogen peroxide molecule and the Water molecule so it is miscible in water.
Explanation for the incorrect option:
(3) the two hydroxyl groups lie in the same plane.
Hydrogen peroxide is basically having the bent molecular geometry and the tetrahedral electron geometry is present there.
It is actually non-planar and has an open book structure with the $O - O$ spins ands so the Hydroxyl groups will not exist in the same plane.
Structure of Hydrogen peroxide is:
Therefore, the correct answer is (B): (1), (2) and (4) only.

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The correct statements about H2O2 are:(1) used in the treatment of effluents.(2) used as both oxidizing and reducing agents.(3) the two hydroxyl groups lie in the same plane.(4) miscible with water.(1), (3) and (4) only.(1), (2) and (4) only.(1), (2), (3) and (4)(2), (3) and (4) only.