Water - Jamb Chemistry Past Questions and Answers

Question 81:

• JAMB 2015

Which of these require crystallization most?

A. Drug making
B. Cement making
C. Paint making
D. Perfume making

Question 82:

• JAMB 2016

The process that requires the use of hardwater in its operation is

A. Tanning
B. Bottling
C. Laundry
D. Dyeing

Question 83:

• JAMB 2017

Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of

A. CaCO₃
B. Na₂CO₃
C. Na₂SO₄
D. CaSO₄

Question 84:

• JAMB 2017

The acid anhydride that will produce weak acid in water is

A. SO₃
B. NO₂
C. SO₂
D. CO₂

Question 85:

• JAMB 2017

A given mass of gas occupies 2dm³ at 300k. At what temperature will its volume be doubled, keeping the pressure constant?

A. 400k
B. 480k
C. 550k
D. 600k