Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 351:

• JAMB 2017

An isomer of C₅H₁₂ is

A. 2–ethyl butane
B. Butane
C. 2–methyl butane
D. 2–methyl propane

Question 352:

• JAMB 2017

When few drops of concentrated trioxonitrate(V) acid is added to an unknown sample and wanned an intense yellow colouration is observed. The likely functional group present in the sample is

A. NH₃—C—C=O
B. CHO
C. CO
D. CNH₂

Question 353:

• JAMB 2017

Incomplete oxidation of ethanol yields

A. CH₃COOH
B. CH₃COCH₃
C. CH₃CH₂OCH₂CH₃
D. CH₂CHO

Question 354:

• JAMB 2017

The reaction of halogens with alkanes in the presence of sunlight is an example of

A. Oxidation reaction
B. Addition reaction
C. Hydrogenation reaction
D. Substitution reaction

Question 355:

• JAMB 2017

The enzyme used in the hydrolysis of starch to dextrin and maltose is

A. Amylase
B. Diastatse
C. Invertase
D. Zymase