A. sodium sulphate
B. copper sulphate
C. sodium chloride
D. calcium chloride
Related Mcqs:
- Which of the following chemical compounds can be used for dechlorination of water ?
A. carbon dioxide
B. bleaching powder
C. sulphur dioxide
D. chloramines - The phenolic compounds in public water supply should not be more than_______________?
A. 0.1 ppm
B. 0.01 ppm
C. 0.001 ppm
D. 0.0001 ppm - Which of the following sewers is preferred for combined system of sewage ?
A. circular sewer
B. egg shaped sewer
C. rectangular sewer
D. none of the above - Which of the following unit works in anaerobic conditions ?
A. sludge digestion tank
B. sedimentation tank
C. activated sludge treatment
D. trickling filters - Which of the following retards the self purification of stream ?
A. higher temperature
B. sunlight
C. satisfying oxygen demand
D. none of the above - Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system ?
A. circle method
B. equivalent pipe method
C. Hardy cross method
D. electrical analysis method - Which of the following values of pH represents a stronger acid?
A. 2
B. 5
C. 7
D. 10 - Which of the following is not a water borne disease ?
A. dysentery
B. cholera
C. typhoid
D. maleria - Which of the following causes a decrease in per capita consumption ?
A. use of metering system
B. good quality of water
C. better standard of living of the people
D. hotter climate - Turbidity is measured on_______________?
A. standard silica scale
B. standard cobalt scale
C. standard platinum scale
D. platinum cobalt scale
