Maximum permissible turbidity in potable water is _____________ ppm?

Related Mcqs:

1. TLV of mercury in potable (drinking) water is about ______________ ppm?

   A. 0.001
   B. 0.1
   C. 1
   D. 5

2. Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in ‘gas chamber’ is about ______________ ppm?

   A. < 1
   B. 10-100
   C. 100-200
   D. 100-1000

3. From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about ________________ ppm?

   A. 5
   B. 50
   C. 500
   D. 5000

4. Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ______________ ppm (parts per million)?

   A. 0.002
   B. 0.2
   C. 1.2
   D. 4.8

5. A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from ______________ ppm?

   A. 1000 to 2000
   B. 3000 to 6000
   C. 6000 to 9000
   D. 10000 to 100000

6. Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 parts per million (ppm)?

   A. Highly
   B. Moderately
   C. Extremely
   D. Very extremely

7. Turbidity of water is an indication of the presence of__________________?

   A. Suspended inorganic matter
   B. Dissolved solids
   C. Floating solids
   D. Dissolved gases

8. The pH value of potable water should be between____________________?

   A. 1 to 1.5
   B. 6.5 to 8
   C. 13 to 14
   D. 4 to 5

9. Presence of a certain minimum quantity of fluorine is desirable in potable water to prevent___________________?

   A. Dental cavities
   B. Scale formation
   C. Water-borne disease
   D. Corrosion

10. Presence of bacteria in potable (drinking) water causes_________________?

    A. Turbidity
    B. Disease
    C. Bad odour
    D. Bad taste & colour