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1
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
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 :
A
(A), (C) and (D) only
B
(A), (B), (C) and (D)
C
(A), (B) and (D) only
D
(B), (C) and (D) only
2
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements :

Statement I : H2O2 can act as both oxidising and reducing agent in basic medium.

Statement II : In the hydrogen economy, the energy is transmitted in the form of dihydrogen.

In the light of the above statements, choose the correct answer from the options given below :
A
Both statement I and statement II are false
B
Statement I is false but statement II is true
C
Statement I is true but statement II is false
D
Both statement I and statement II are true
3
JEE Main 2021 (Online) 26th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Statements about heavy water are given below :

A. Heavy water is used in exchange reactions for the study of reaction mechanisms.

B. Heavy water is prepared by exhaustive electrolysis of water.

(C) Heavy water has higher boiling point than ordinary water.

(D) Viscosity of H2O is greater than D2O.

Choose the most appropriate answer from the options given below :
A
A, B, and C only
B
A and C only
C
A and D only
D
A and B only
4
JEE Main 2021 (Online) 25th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Water does not produce CO on reacting with :
A
C
B
CH4
C
C3H8
D
CO2
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