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. 


When sodium trioxocarbonate (IV) decahydrate loses water of crystallization to the atmosphere, the process is ______ (JAMB 2009)

A. deliquescence
B. efflorescence
C. hygroscopic
D. effervescence

2. 


In the course of purifying water for town supply, the water is passed through large settling tanks containing sodium aluminate (III) to remove _____ (JAMB 2008)

A. large particles
B. germs
C. fine particles
D. odour

3. 


The advantage of soapless detergent over a soapy detergent is that soapless detergent _______ (JAMB 2019)

(a) form scum
(b) cheaper
(c) is not affected by the type of water used
(d) has greater cleansing ability

4. 


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

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

5. 


Water is said to be temporarily hard when it contains ______ (JAMB 2014)

A. CaSO4 and Ca(HCO3)2 salts
B. Ca(HCO3)2 and Mg(HCO3)2 salts
C. Ca(HCO3)2 and CaCO3 salts
D. Mg(HCO3)2 and CaSO4 salts

 

 

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