Jamb Chemistry Past Questions and Answers

Question 211:

• JAMB 1981

An example of a strong electrolyte is?

A. Ethyl acetate
B. Ethanol
C. Glucose
D. Sodium formate
E. Formic acid

Question 212:

• JAMB 1981

The oxidation number of manganese in KMnO₄ is?

A. +1
B. +3
C. +5
D. +7
E. +2

Question 213:

• JAMB 1981

Methane is member of the homologous series called?

A. Alkenes
B. Alcohols
C. Esters
D. Alkanes
E. Alkynes

Question 214:

• JAMB 1981

For iron to rust, there should be present?

A. Oxygen
B. Moisture
C. Carbondioxide
D. Oxygen and moisture
E. Oxygen, moisture and carbondioxide

Question 215:

• JAMB 1981

The mass number of an atom is?

A. The number of electrons in the atom
B. The number of protons in the nucleus of the atom
C. The number of neutrons in the nucleus of the atom
D. The sum of numbers of electrons and protons inthe atom
E. The sum of numbers of proton and neutrons in the nucleus of the atom