A. dysentery
B. cholera
C. typhoid
D. maleria
Related Mcqs:
- Assertion A : The consumption of water increases with increase in the distribution pressure. Reason R : Higher distribution pressure causes more loss and waste of water. Select your answer according to the coding system given below?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true - 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 chemical compounds can be used for dechlorination of water ?
A. carbon dioxide
B. bleaching powder
C. sulphur dioxide
D. chloramines - The polluted water is one which_______________?
A. contains pathogenic bacteria
B. consists of undesirable substances rendering it unfit for drinking and domestic use
C. is safe and suitable for drinking and domestic use
D. is contaminated - Residual chlorine in water is determined by________________?
A. starch iodide method
B. orthotolidine method
C. both (A) and (B)
D. none of the above - If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to________________?
A. total alkalinity
B. total hardness
C. total hardness – total alkalinity
D. non carbonate hardness - Chlorine demand of water is equal to________________?
A. applied chlorine
B. residual chlorine
C. sum of applied and residual chlorine
D. difference of applied and residual chlorine - The major disadvantage of lime soda process of water softening is that_________________?
A. it is unsuitable for turbid and acidic water
B. huge amount of precipitate is formed which creates a disposal problem
C. the effluent cannot be reduced to zero hardness
D. it is unsuitable for softening the water of excessive hardness - On standard silica scale, the turbidity in drinking water should be limited to_______________?
A. 10 ppm
B. 20 ppm
C. 30 ppm
D. 50 ppm - The devices which are installed for drawing water from the sources are called______________?
A. aquifers
B. aquiclude
C. filters
D. intakes