Treatment of water for town supply - Jamb Chemistry Past Questions and Answers

Question 1:

• JAMB 1998

Potassium tetraoxomanganate (VII) is often added to impure water to?

A. Reduce organic impurities
B. Reduce inorganic impurities
C. Destroy bacteria and algae
D. Remove permanent hardness

Question 2:

• JAMB 2000

The chlorinated alkane often used industrially to remove grease is

A. Tetrachloromethane
B. Chloromethane
C. Trichloromethane
D. Dichlorometane

Question 3:

• JAMB 2011

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

A. Cause coagulation
B. Neutralize acidity
C. Prevent goitre and tooth decay
D. Kill germs

Question 4:

• JAMB 2012

Chlorination of water for town supply is carried out to

A. Make the water colourless
B. Remove germs from the water
C. Make the water tastedful
D. Remove odour from the water