Organic Compounds - Jamb Chemistry Past Questions and Answers

Question 221:

• JAMB 2004

Alkanol + Alkanoic ↔ Ester + Water
The reverse reaction above is known as

A. Hydrolysis
B. Saponification
C. Hydration
D. Fermentation

Question 222:

• JAMB 2005

What is the correct IUPAC name for NO\(_{2} ^{-}\)?

A. Dioxonitrate (IV) ion
B. Trioxonitrate (III) ion
C. Trioxonitrate (IV) ion
D. Dioxonitrate (III) ion

Question 223:

• JAMB 2005

The enzymes responsible for converting sucrose into two simple isomeric sugars is

A. Maltase
B. Amylase
C. Invertase
D. Lactase

Question 224:

• JAMB 2005

The decolourization of purple colour of tetraoxomanganate (VII) ion is a test for

A. Alkenes
B. Alkanols
C. Alkanals
D. Alkanes

Question 225:

• JAMB 2005

Which of the following are structural isomers?

A. Propanoic acid and propan-1, 2-diol
B. Propanal and propanone
C. Ethanoic acid and propanoic acid
D. Ethan-1, 2-diol and ethanoic acid