Explore topic-wise MCQs in Engineering Chemistry.

This section includes 7 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.

Aniline is separated from aniline-water mixture using ____________

A. Fractional distillation
B. Fractional crystallisation
C. Steam distillation
D. All of the mentioned
Answer» D. All of the mentioned
Discussion
2.

The pure solvent after the differential extraction cannot be used again for the extraction.

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

The organic compound in differential extraction is recovered from the organic solvent by ____________

A. Distillation
B. Fractional crystallisation
C. Steam crystallisation
D. Sublimation
Answer» B. Fractional crystallisation
Discussion
4.

When does the organic compound be present in the upper solvent layer in differential extraction?

A. Before the extraction
B. During the extraction
C. After the extraction
D. It is always present in the upper layer
Answer» D. It is always present in the upper layer
Discussion
5.

Steam distillation process is used to separate substances which are ____________

A. Steam volatile
B. Steam volatile and immiscible with water
C. Steam volatile and miscible with water
D. All of the mentioned
Answer» C. Steam volatile and miscible with water
Discussion
6.

The organic liquid in steam distillation vaporizes at ____________

A. Lower temperature than its boiling point
B. Higher temperature than its boiling point
C. At its boiling point
D. None of the mentioned
Answer» B. Higher temperature than its boiling point
Discussion
7.

In steam distillation, the liquid boils when the sum of vapour pressure due to organic liquid and due to water becomes ____________

A. Greater than atmospheric pressure
B. Lesser than atmospheric pressure
C. Equals to atmospheric pressure
D. None of the mentioned
Answer» D. None of the mentioned
Discussion