Chemistry Practice Test – Water (Questions with Answers and Explanations)

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Chemistry Practice Test – Water

Hello and Welcome to Chemistry Practice Test – Water

  1. You are to attempt 5 random objectives questions ONLY.
  2. Supply Your Full Name and Location in the text box below and begin immediately.
  3. You can attempt as many times as possible.
1. 


The process that requires the use of hard water in its operation is _____ (JAMB 2016)

A. tanning
B. bottling
C. laundry
D. dyeing

2. 


The chemicals used to soften hard water involves the addition of _____ (JAMB 2012)

A. insoluble sodium compounds which form soluble solutions of calcium and magnesium ions
B. soluble sodium compounds which form soluble solutions of calcium and magnesium ions
C. soluble sodium compounds which form insoluble precipitates of calcium and magnesium ions
D. Insoluble sodium compounds which form insoluble precipitates of calcium and magnesium

3. 


Substances employed as drying agents are usually ______ (JAMB 2010)

A. efflorescent
B. acidic
C. amphoteric
D. hygroscopic.

4. 


Which of the following is suitable for removing both temporary and permanent hardness? (JAMB 2019)

(a) the addition of alum
(b) the addition of Ca(OH)2
(c) distillation
(d) boiling

5. 


The importance of sodium aluminate (III) in the treatment of water is to _____ (JAMB 2011)

A. kill germs
B. cause coagulation
C. neutralise acidity
D. prevent goiter and tooth decay

 

 

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