Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the correct decreasing order of stability of following cation?

A. II > III > I > IV
B. IV > II > III > I
C. IV > III > I > II
D. III > I > II > IV
Answer» C. IV > III > I > II
Discussion
2.

Arrange the following intermediate into decreasing order of stability.

A. I > II > III > IV
B. II > IV > III > I
C. II > I > IV > III
D. II > I > III > IV
Answer» E.
Discussion
3.

Which intermediate is involved in the reaction given below?

A. free radical
B. carbocation
C. carbanion
D. carbene
Answer» E.
Discussion
4.

The order of decreasing stability of the following cations is? (I) CH3C+HCH3 (II) CH3C+HOCH3 (III) CH3C+HCOCH3

A. III > II > I
B. I > II > III
C. II > I > III
D. I > III > II
Answer» B. I > II > III
Discussion
5.

The order of decreasing stability of the following cations is:

A. CH<sub>3</sub>C<sup>+</sup>HCH<sub>3</sub> (II) CH<sub>3</sub>C<sup>+</sup>HOCH<sub>3</sub> (III) CH<sub>3</sub>C<sup>+</sup>HCOCH<sub>3</sub>
B. III > II > I
C. I > II > III
D. II > I > III
Answer» B. III > II > I
Discussion
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