There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth’s surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about _____________ °C/km?

Related Mcqs:

Ringelmann chart No. 2 corresponds to _______________ percent black smoke?

A. 10 B. 20 C. 40 D. 80...

Presence of _____________ bacteria in water causes disease like typhoid?

A. Aerobic B. Pathogenic C. Anaerobic D. Non-pathogenic...

Dust collection efficiency of a cyclone separator depends upon its______________?

A. Diameter B. Inlet gas velocity C. Overall height D. All A., B. & C....

Maximum permissible turbidity in potable water is _____________ ppm?

A. 1 B. 10 C. 250 D. 1000...

Photochemical smog is formed from automobile exhaust ________________?

A. By reaction of hydrocarbon & nitric oxide in presence of sunlight B. Appears only on sunny days C. Is harmful for crops and trees also besides causing eye irritation & asthma D. All A., B. & C....