CHEMISTRY MCQ S

Chemistry MCQ



Chemistry MCQ

MOLECULE B

Question 1

 

Which types of bonds can be identified in the IR spectrum of molecule B?

Answer

a.

C=O and C=C

b.

C=O and O-H

c.

O-H only

d.

C=O only

Question 2

 

By identifying the molecular ion, determine which of the molecular formula is consistent with the mass spectrum of B.

Answer

a.

C4H8O2

b.

C2H3O

c.

C2H4O

d.

C4H6O

Question 3

 

How many hydrogen environments are there in molecule B?

Answer

a.

8

b.

3

c.

7

d.

4

Question 4

 

The peak at 2.7 ppm in the 1H NMR spectrum of B is most likely to be:

Answer

a.

alkyl group hydrogen

b.

aldehyde proton

c.

proton adjacent to a carbonyl

d.

proton adjacent to an oxygen

Question 5

 

The peak at 1.1 ppm in the 1H NMR of molecule B is a doublet. It represents protons ...