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Water is a universal solvent for what reactions?

A. Chemical
B. Biochemical 
C. Physical
D. Nuclear

How many methods of removing the radio active impurities are there?

a) 2
b) 3
c) 3
d) 4

The treatment of water with _________ improves the taste of water

a) Oxygen
b) Chlorine
c) KMnO4
d) Ozone

Reacting the water with _________ removes the odour due to the phenols

a) KMnO4
b) MnO4
c) Potassium
d) Magnesium

__________ imparts peculiar odour to the water

a) Decaying organic matter
b) Detergents
c) Phenols
d) Dissolved oxygen

The unpleasant odour of the water is due to presence of the __________

a) Nitrogen
b) Bismuth
c) Phenols
d) Dissolved oxygen

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