Explore topic-wise MCQs in Chemistry Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Consider three gaseous alkylamines A, B and C or 1°, 2° and 3° respectively. What will be the correct order of their basicity?

A. A > B > C
B. C > B > A
C. B > A > C
D. B > C > A
Answer» C. B > A > C
Discussion
2.

If the Kb values of ammonia, methylamine and ethylamine are x, y and z respectively, identify the correct relation between x, y and z from the following.

A. x > y
B. y < z
C. x > z
D. x > y > z
Answer» C. x > z
Discussion
3.

If the pKb value of ammonia is 4.75, predict the pKb value of methanamine?

A. 3.38
B. 4.70
C. 8.92
D. 9.38
Answer» B. 4.70
Discussion
4.

What is the correct order of pKb values of the following amines?

A. Methanamine > Ethanamine > Benzenamine
B. Benzenamine > Ethanamine > Methanamine
C. Ethanamine > Methanamine > Benzenamine
D. Benzenamine > Methanamine > Ethanamine
Answer» E.
Discussion
5.

Which of the following is associated with decrease in pKb value of amines?

A. Increase in acidic strength
B. Increase in basic strength
C. Better proton donation
D. Better electron acceptor
Answer» C. Better proton donation
Discussion