Environmental Science MCQs

Question 1

The time of day when the relative humidity reaches a maximum value is usually

Accepted Answer

At the time when the air temperature is lowest

Answer

At the time when the air temperature is highest

Answer

In the middle of the afternoon

Answer

Just before sunrise

Question 2

The deepest radiation inversion would be observed:

Accepted Answer

In polar regions in winter

Answer

At the equator any day of the year

Answer

At the top of a high mountain in winter

Answer

On a desert in winter

Question 3

The abiotic and biotic components constitute the structure of an

Accepted Answer

Ecosystem

Answer

energy flow

Answer

environment

Answer

atmosphere

Question 4

All species on earth together with their environments collectively comprise

Accepted Answer

biosphere

Answer

lithosphere

Answer

hydrosphere

Answer

atmosphere

Question 5

The practical problem in hydrogen production is its

Accepted Answer

weight

Answer

valency

Answer

atomicity

Answer

chemical property

Question 6

In the northern hemisphere, the number of hours of daylight begin to shorten after the

Accepted Answer

Summer solstice

Answer

Spring equinox

Answer

Autumn equinox

Answer

Winter solstice

Question 7

Climate includes

Accepted Answer

All of these

Answer

Seasonal variation

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General patterns of atmosphere conditions

Answer

Average weather of an area

Question 8

An example of nitrogen fixing bacteria in the soil

Accepted Answer

Azotobacter

Answer

Rhizobium

Answer

Nostoc

Answer

Nitrobacter

Question 9

In a food chain of grassland ecosystem the top consumers are

Accepted Answer

Carnivorous

Answer

Herbivorous

Answer

Bacteria

Answer

Either carnivorous or herbivorous