A. 10 ppm
B. 20 ppm
C. 30 ppm
D. 50 ppm
Related Mcqs:
- Turbidity is measured on_______________?
A. standard silica scale
B. standard cobalt scale
C. standard platinum scale
D. platinum cobalt scale - The maximum permissible limit for flouride in drinking water is______________?
A. 0.1 mg/litre
B. 1.5 mg/litre
C. 5 mg/litre
D. 10 mg/litre - Average rate of water consumption perhead per day as per Indian Standard is______________?
A. 100 litres
B. 135 litres
C. 165 litres
D. 200 litres - Standard BOD is measured at________________?
A. 20°C – 1day
B. 25°C- 3day
C. 20°C – 5day
D. 30°C- 5day - Standard EDTA (ethylene diamine tetra acetic aciD. solution is used to determine the_______________?
A. hardness in water
B. turbidity in water
C. dissolved oxygen in water
D. residual chlorine in water - 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 - Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about_______________?
A. 10 to 25
B. 50
C. 75
D. 100 - In chlorination, with the rise in temperature of water, death rate of bacteria____________?
A. increases
B. decreases
C. remains unaffected
D. none of the above - The treatment of water with bleaching powder is known as________________?
A. prechlorination
B. super chlorination
C. dechlorination
D. hypochlorination - If the coliform bacteria is present in a sample of water, then the coliform test to be conducted is_____________?
1) presumptive coliform test
2) confirmed coliform test
3) completed coliform test
The correct answer is ?A. only (1)
B. both (1) and (2)
C. both (1) and (3)
D. all (1), (2) and (3)
