The progressive warming up of the earth’s surface is mainly due to the___________________?

Related Mcqs:

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

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

Iron & manganese present as pollutant in water cannot be removed by__________________?

A. Ion exchange process B. Oxidation followed by settling & filtration C. Lime soda process or manganese zeolite process D. Chlorination...

Pollution by particulate matter emission in the atmosphere does not take place during metal____________________?

A. Grinding B. Machining C. Cutting D. Polishing...

Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the_______________?

A. Forestation B. Rain C. Green house effect D. Vegetation...

Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called_________________?

A. Fumes B. Mists C. Smoke D. Aerosols...