Environmental Science MCQs

✅ The correct answer is option C.
Ecology is a branch of biology concerning interactions among organisms and their biophysical environment, which includes both biotic and abiotic components.

✅ The correct answer is option B.
The major pollutant from automobile exhaust is Carbon monoxide (CO).

✅ The correct answer is option A.
The Venusian atmosphere is mainly made up of carbon dioxide, a greenhouse gas. On Earth, carbon dioxide makes up only a tiny fraction of the atmosphere. However, man-made emissions have caused carbon dioxide concentrations here to increase by about 30% since pre-industrial times.

✅ The correct answer is option D.

✅ The correct answer is option A.
Over 500,000 people were exposed to methyl isocyanate (MIC) gas. The highly toxic substance made its way into and around the small towns located near the plant.

✅ The correct answer is option A.
At Barrow, Alaska one would be able to observe cirrus clouds at an altitude of 3,000 m (10,000 feet) above the surface.

✅ The correct answer is option A.
Fog that forms off the coast of Newfoundland is mainly a form of advection fog.

✅ The correct answer is option C.
Secondary pollutants are not emitted directly. They are formed from the combination of primary pollutants with some other compound. Examples of secondary pollutants are Ozone, Formaldehyde, PAN (peroxy acetyl nitrate) and Smog etc.

✅ The correct answer is option B.
Jim Corbett National Park is the oldest national park in India and was established in 1936 as Hailey National Park to protect the endangered Bengal tiger. It is located in Nainital district and Pauri Garhwal district of Uttarakhand and was named after Jim Corbett, a well known hunter and naturalist.

✅ The correct answer is option B.
If water vapour comprises 3.5 percent of an air parcel whose total pressure is 1,000 mb, the water vapour pressure would be 35 mb.