Environmental Science MCQs

✅ The correct answer is option D.
Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature. Warm air is less dense than cold air, and so convection currents can form in the presence of a temperature gradient.

✅ The correct answer is option B.
Minamata disease, which can induce lethal or severely debilitating mental and physical effects, was caused by methylmercury‑contaminated effluent released into Minamata Bay by Chisso, Japan’s largest chemical manufacturer. It resulted in widespread suffering among those who unknowingly ate the contaminated fish.

✅ The correct answer is option C.
The final or stable community in a sere is the climax community or climatic vegetation. It is self-perpetuating and in equilibrium with the physical habitat.

✅ The correct answer is option C.
Aquatic life is damaged by thermal pollution.

✅ The correct answer is option A.

✅ The correct answer is option C.
The Earth Summit of Rio de Janeiro, also known as the United Nations Conference on Environment and Development (UNCED), was held in Rio de Janeiro from 3 to 14 June 1992. It resulted in the Convention on Biodiversity, a multilateral treaty.

✅ The correct answer is option C.
The source of aerosol in upper atmosphere is jet planes.

✅ The correct answer is option C.
Mullaperiyar dam is on the Cardamom Hills of the Western Ghats in Thekkady, Idukki District of Kerala, South India.

✅ The correct answer is option C.
The strongest radiation inversions occur when skies are clear.

✅ The correct answer is option D.
All of these.