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?

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. ‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?

   A. Industrial chimney exhaust B. Automobiles exhaust C. Photochemical reaction in polluted atmosphere D. Burning of domestic fuel...

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

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

4. Threshold limit value (TLV) of CO in air is _____________ ppm?

   A. 5 B. 50 C. 2000 D. 5000...

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. TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?

   A. 0.1 B. 25 C. 100 D. 1000...

7. 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...

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...