Explore topic-wise MCQs in Engineering Chemistry.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

The sufficient condition for showing optical activity is _______________

A. Molecule should have measurable amount of optical activity only
B. Polarimeter should have capacity of recording low-degree optical activity only
C. Chirality of molecule as a whole only
D. Both, the molecule should have measurable amount of optical activity and polarimeter should have capacity of recording low-degree optical activity
Answer» E.
Discussion
2.

The necessary condition for showing optical activity is the chirality of a molecule as a whole.

A. True
B. False
Answer» B. False
Discussion
3.

Find the number of stereoisomers for CH3 – CHOH – CH = CH – CH3.

A. 1
B. 2
C. 3
D. 4
Answer» E.
Discussion
4.

For a molecule with two like chiral carbon atoms, the number of optically active form is?

A. 4
B. 3
C. 1
D. 2
Answer» E.
Discussion
5.

For a molecule with two like chiral carbon atoms, the number of optically inactive form is?

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
6.

The number of racemic forms of molecules having (n) different chiral carbons is ____________

A. 2n
B. 2n
C. 2n-1
D. 2n+1
Answer» D. 2n+1
Discussion
7.

The number of configurational isomers of molecules having (n) different chiral carbons is ____________

A. 2n
B. 2n
C. 2n-1
D. 2n+1
Answer» C. 2n-1
Discussion
8.

FIND_THE_NUMBER_OF_STEREOISOMERS_FOR_CH3_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_CHOH_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_CH_=_CH_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_CH3.?$#

A. 1
B. 2
C. 3
D. 4
Answer» E.
Discussion
9.

The sufficient condition for showing optical activity is
A. Molecule should have measurable amount of optical activity only
B. Polarimeter should have capacity of recording low-degree optical activity only
C. Chirality of molecule as a whole only
D. Both, the molecule should have measurable amount of optical activity and polarimeter should have capacity of recording low-degree optical activity
Answer» E.
Discussion
10.

The necessary condition for showing optical activity is the chirality of a molecule as a whole.$

A. True
B. False
Answer» B. False
Discussion
11.

Which of the following is not optically active compound?

A. 1,7- Dicarboxylic spirocycloheptane
B. 1,3- Diphenyl propadiene
C. Meso-tartaric acid
D. Glyceraldehyde
Answer» D. Glyceraldehyde
Discussion
12.

Spiranes exhibit optical isomerism because of restricted rotation.

A. True
B. False
Answer» B. False
Discussion
13.

Which of the following is an example of optically active compounds without chirality?

A. Tartaric acid
B. Sulfhonium salt
C. Diphenic acid
D. Glyceraldehyde
Answer» C. Diphenic acid
Discussion
14.

For a molecule with two like chiral carbon atoms, the number of optically inactive form is

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
15.

The number of racemic forms of molecules having (n) different chiral carbons is

A. 2n
B. 2<sup>n</sup>
C. 2<sup>n-1</sup>
D. 2<sup>n+1</sup>
Answer» D. 2<sup>n+1</sup>
Discussion
16.

The number of configurational isomers of molecules having (n) different chiral carbons is

A. 2n
B. 2<sup>n</sup>
C. 2<sup>n-1</sup>
D. 2<sup>n+1</sup>
Answer» C. 2<sup>n-1</sup>
Discussion
17.

Which of the following compound would show optical isomerism?

A. CH<sub>3</sub> – CH(OH) COOH
B. H<sub>2</sub>N CH(CH<sub>3</sub>)<sub>2</sub>
C. (CH<sub>3</sub>)<sub>2</sub> CHCHO
D. H<sub>2</sub>N CH<sub>2</sub> COOH
Answer» B. H<sub>2</sub>N CH(CH<sub>3</sub>)<sub>2</sub>
Discussion
18.

How many optical isomers are possible in a compound with one chiral carbon?

A. 5
B. 4
C. 2
D. 3
Answer» E.
Discussion
19.

Optical activity is the property in which a substance is unable to rotate the plane of polarisation.

A. True
B. False
Answer» C.
Discussion