In chlorination, with the rise in temperature of water, death rate of bacteria____________?
B. decreases
C. remains unaffected
D. none of the above
B. decreases
C. remains unaffected
D. none of the above
B. decreases
C. remains unaffected
D. none of the above
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The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is________________?
The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is________________?A. 9500
B. 9800
C. 10100
D. 10920Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes
Question: Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes
[A].paralysis of muscles & loss of appetite. [B].
nervous depression. [C].
gastritis & diarrhea. [D].
all (a), (b) and (c). Answer: Option D
Explanation:
No answer description available for this question.
For normal sludge, the value of sludge index for Indian conditions is________________?
For normal sludge, the value of sludge index for Indian conditions is________________?A. 0 to 50
B. 50 to 150
C. 150 to 350
D. 350 to 500The type of sewer which is suitable for both combined and separate system is_____________?
The type of sewer which is suitable for both combined and separate system is_____________?A. circular sewer
B. egg shaped sewer
C. horse-shoe type sewer
D. semi-elliptical sewerThe type of valve, which is provided on the suction pipe in a tube-well, is____________?
The type of valve, which is provided on the suction pipe in a tube-well, is____________?A. air relief valve
B. reflux valve
C. pressure relief valve
D. sluice valveFluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
Question: Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
[A].hydrocarbons [B].
hydrogen flouride [C].
hydrogen sulphides [D].
nitrogen dioxide Answer: Option B
Explanation:
No answer description available for this question.