Environmental Science MCQs

Question 1

_________ mixed with diesel reduces carbon monoxide emissions up to 50%.

Accepted Answer

Ethanol

Answer

Methanol

Answer

Alcohol

Answer

Phenol

Question 2

Fungi is/are

Accepted Answer

heterotrophic eukaryotes

Answer

single-celled prokaryotes

Answer

Phototrophic eukaryotes

Answer

Eukaryotes single-celled and primitive multi-celled organisms

Question 3

In an aquatic ecosystem, the depth to which light penetrates is called

Accepted Answer

photic

Answer

aphotic

Answer

euphotic

Answer

nonphotic

Question 4

Algal bloom results in

Accepted Answer

Eutrophication

Answer

Global warming

Answer

Salination

Answer

Biomagnification

Question 5

The maximum in daytime surface temperature typically occurs _______ the earth receives its most intense solar radiation.

Accepted Answer

After

Answer

Before

Answer

Exactly when

Answer

Long time

Question 6

The resources that can be replaced by natural ecological cycle is called

Accepted Answer

Renewable

Answer

non-renewable

Answer

exhaustible

Answer

natural

Question 7

The portion of the earth and its environment which can support life is known as _________

Accepted Answer

Biosphere

Answer

Crust

Answer

Exosphere

Answer

atmosphere

Question 8

Zoos are examples for

Accepted Answer

ex-situ conservation

Answer

In-situ conservation

Answer

in-vivo conservation

Answer

exvivo conservation

Question 9

Red sea is an example of a ________ structure.

Accepted Answer

Faulted

Answer

Folded

Answer

lava

Answer

residual