Solubility - Jamb Chemistry Past Questions and Answers

Question 76:

• JAMB 2015

In the production of soap, concentrated sodium chloride solution is added to

A. Increase the solubility of soap
B. Decrease the solubility of the soap
C. Saponify the soap
D. Emulsify the soap

Question 77:

• JAMB 2016

The colour of litmus in an alkaline medium is

A. Red
B. Yellow
C. Pink
D. Blue

Question 78:

• JAMB 2016

The compound produced when sodium peroxide is heated with excess sodium is

A. Na₂CO₃
B. Na₂O
C. NaNO₂
D. NaOH

Question 79:

• JAMB 2017

The tincture of iodine means iodine dissolved in

A. Ethanol
B. Bromine chloride
C. Chlorine water
D. Water

Question 80:

• JAMB 2018

On which of the following is the solubility of a gaseous substance dependent?
I. Nature of solvent
II. Nature of solute
III. Temperature
IV. Pressure

A. I, II, III and IV
B. I and II only
C. II only
D. I, III and IV only