Environmental Science MCQs

Question 1

The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?

Accepted Answer

High albedo of clouds, low albedo of water

Answer

High albedo of clouds, high albedo of water

Answer

Low albedo of clouds, low albedo of water

Answer

Low albedo of clouds, high albedo of water

Question 2

The slow rate of decomposition of fallen logs in nature is due to their

Accepted Answer

low moisture content

Answer

poor nitrogen content

Answer

low cellulose content

Answer

anaerobic environment around them

Question 3

A high Biological Oxygen Demand (BOD) indicates that:

Accepted Answer

High level of microbial pollution

Answer

water is pure

Answer

absence of microbial action

Answer

Low level of microbial pollution

Question 4

Thorn-forests are found in the _______ regions.

Accepted Answer

semi-arid

Answer

high rain fall areas

Answer

low temperature

Answer

frozen areas

Question 5

Green plants are absent in deep sea. Why?

Accepted Answer

Light is absent

Answer

High pressure

Answer

Low temperature

Answer

Great depth

Question 6

Euro II standard refers to _________

Accepted Answer

Lowering carbon content in fuel

Answer

Lowering sulfur content in fuel

Answer

Increasing sulfur content in fuel

Answer

increasing carbon content in fuel

Question 7

What is troposphere?

Accepted Answer

Lowest layer of atmosphere where we survive

Answer

Portion of air

Answer

Portion of water

Answer

Portion of sky

Question 8

When human body is infected by infection __________ type of cells are activated to defend the body.

Accepted Answer

lymphocytes

Answer

erythrocytes

Answer

leukocytes

Answer

monocytes

Question 9

Who among the following is commonly called "Bird Man of India"?

Accepted Answer

Salim Ali

Answer

M.S. Swaminathan

Answer

M.C. Mehta

Answer

Raphel Emerson