When the amount
of chlorine is increased in swimming pool water, it can cause …………
a) skin cancer
b) eye
irritation
c) gigantism
d) hepatitis
The minimum concentration of chlorine in swimming pool water is …………
a) 0.5 mg/m3
b) 0.5 dm3
c) 0.5 mg/dm3
d) 5mg/dm3
The maximum concentration of chlorine in swimming pool water is ……….
a) 15 dm3
b) 15 mg/dm3
c) 15 mg
d) 1.5 mg/dm3
Chemistry helps to maintain a clean swimming pool by killing bacteria and other microorganisms by using …………
a) iodine
b) bromine
c) chlorine
d) all of these
Water as Solvent:-
Most salts (pollutants) dissolve in ………and cause water pollution.
a) water
b) chlorine
c) iodine
d) CO2
