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

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. Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ______________ toxic gas?

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

3. 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...

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

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

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

   A. 22 B. 42 C. 332 D. 1050...

6. 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...

7. 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...

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

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

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

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

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

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