Explore topic-wise MCQs in Chemistry Questions and Answers.

This section includes 2 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.

The bond enthalpy of H2O and OH are 502 KJ mol-1 and 427 KKJ mol-1. Then what is the average bond enthalpy?

A. 502 KJ mol-1
B. 464.5 KJ mol-1
C. 427 KJ mol-1
D. 75 KJ mol-1
Answer» C. 427 KJ mol-1
Discussion
2.

The covalent radius in a chlorine molecule and van der Waal’s radius between chlorine molecules respectively can be ________ & _________

A. 99pm, 198pm
B. 198pm, 99pm
C. 198pm, 198pm
D. 99pm, 99m
Answer» B. 198pm, 99pm
Discussion