Explore topic-wise MCQs in Organic Chemistry.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

How the bond dissociation enthalpy changes as one goes along the series of diatomics Li2, B2, C2, N2, O2 and F2?

A. Increases
B. Decreases
C. Increases then decreases
D. Decreases then increases
Answer» D. Decreases then increases
Discussion
2.

Which one of the following statements best describes the enthalpy change of a reaction?

A. The energy released when chemical bonds are formed during a chemical reaction
B. The energy consumed when chemical bonds are broken during a chemical reaction
C. The difference between the energy released by bond formation and the energy consumed by bond cleavage during a chemical reaction
D. The increase in disorder of the system as a reaction proceeds
Answer» D. The increase in disorder of the system as a reaction proceeds
Discussion
3.

What will be the change in energy for the following reaction?
H2(g)+F2(g) 2HF

A. nGiven: To break one mole of H<sub>2</sub>, energy absorbed is 436 kJ. To break one mole of F<sub>2</sub>, energy absorbed is 158 kJ. To form one moles of HF, energy released is 568 kJ.
B. 542KJ
C. -542KJ
D. 26 KJ
E. -26 KJ
Answer» C. -542KJ
Discussion