Out of the following, TLV of __________ is maximum (about 500 ppm). Options: A . &nbspCarbon dioxide B . &nbspToluene C . &nbspAcetaldehyde D . &nbspCarbon disulphide

Out of the following, TLV of __________ is maximum (about 500 ppm).

Question

Out of the following, TLV of __________ is maximum (about 500 ppm).

Options:

A . Carbon dioxide

B . Toluene

C . Acetaldehyde

D . Carbon disulphide

Answer: Option A

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Next Question

Question 1. Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million).....

Question 2. Average human body contains about __________ percent water by weight.....

Question 3. Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ________....phosgene in air is about __________ ppm (parts per million).

Question 4. Septic tanks are used for the __________ of the deposited solids.....

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

Question 6. Acute danger to human life (i.e. death) exists, if the concentration of CO₂ in atmospheric air exceeds __________ perc....of CO₂ in atmospheric air exceeds __________ percent (by volume).

Question 7. CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of c....from CFC is capable of decomposing __________ molecules of ozones.

Question 8. Reingleman chart No. 2 corresponds to __________ percent black smoke.....

Question 9. Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.....

Question 10. As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particula....(i.e., TLV) of particulate matter in air is __________ μg/m³.(μg-microgram)

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