The concentration of water vapour in troposphere, which depends upon the altitude & temperature, varies in the range of zero to ______________ percent?

Related Mcqs:

Noise level in a quiet private business office is about _____________ decibels?

A. 25 B. 50 C. 70 D. 85...

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...

World environment day is observed every year on the 5th of___________________?

A. June B. December C. July D. September...

Polyvinyl chloride containers are not suitable for storing_________________?

A. Foodstuffs B. Woolen clothes C. Metallic powder D. None of these...

Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of _____________ metres?

A. 100 B. 1000 C. 400 D. 4000...