Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is _______________ micro gram (μ g)/litre?

Related Mcqs:

1. 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...

2. TLV of aldrin in public water supply system is about ____________ μg/litre?

   A. 0.5 B. 17 C. 357 D. 1097...

3. As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is _____________ μg/m3.(μg-microgram)?

   A. 10 B. 90 C. 800 D. 750...

4. 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...

5. Maximum permissible residual chlorine in treated water should be ____________ mg/litre?

   A. 0.001 to 0.01 B. 0.2 to 0.3 C. 2 to 3 D. 5 to 10...

6. 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...

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

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

8. Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by_______________?

   A. Chlorination B. Treating in biological oxygen pond C. Chemical coagulation D. None of these...

9. TLV of lead for public sewer/waste water is about ______________ ppm?

   A. 1 B. 25 C. 150 D. 650...

10. Out of the following, TLV of _______________ is maximum (about 500 ppm)?

    A. Carbon dioxide B. Toluene C. Carbon disulphide D. Acetaldehyde...