500 Best Irrigation Engineering MCQ
Q129). The treatment of water with only chlorine is known as
a).Plain chlorination
b).Post chlorination
c).Pre chlorination
d).De chlorination
Correct Answer:
Plain chlorination
Explanation:
Q130). Pre chlorination
a).Improves coagulation
b).Reduces odours
c).Reduces tastes
d).All of these
Correct Answer:
All of these
Explanation:
Q131). To prevent the formation of crystalline hydrates of ‘ice’ of chlorine, the chlorine supply cylinders are kept at a temperature from
a).10°C to 20°C
b).20°C to 27°C
c).27°C to 37°C
d).38°C to 42°C
Correct Answer:
38°C to 42°C
Explanation:
Q132). Crystalline hydrates of ‘Ice’ of chlorine are formed at a temperature of
a).Below 10°C
b).15°C
c).20°C
d).Above 20°C
Correct Answer:
Below 10°C
Explanation:
Q133). The apparatus used for feeding chlorine into water is called
a).Chlorine tank
b).Aeration fountain
c).Chlorinator
d).None of these
Correct Answer:
Chlorinator
Explanation:
Q134). When the chlorine is added beyond the break point, the process of treating the water is known as
a).Plain chlorination
b).Post chlorination
c).De-chlorination
d).Super chlorination
Correct Answer:
Super chlorination
Explanation:
Q135). The process of removing excess chlorine from water is called
a).Plain chlorination
b).Post chlorination
c).De-chlorination
d).Super chlorination
Correct Answer:
De-chlorination
Explanation:
Q136). The process of de-chlorination is followed by
a).Plain chlorination
b).Post chlorination
c).Super chlorination
d).Double chlorination
Correct Answer:
Super chlorination
Explanation: