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

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. 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...

6. Maximum allowable concentration of CO2 in air for safe working is _____________ ppm (parts per million)?

   A. 50 B. 1000 C. 2000 D. 5000...

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

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

8. 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...

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

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

10. Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) ?

    A. Acts as a green house gas thereby raising earth’s temperature B. Causes asphyxia C. Causes increase in sea level D. Enhances the green house effect...