Environmental Science MCQs

Question 1

The density of water vapour in a given parcel of air is expressed by the:

Accepted Answer

Absolute humidity

Answer

Relative humidity

Answer

Mixing ratio

Answer

Specific humidity

Question 2

The pyramid of number of a parasitic food chain in forest ecosystem is

Accepted Answer

always inverted

Answer

always upright

Answer

mixture of inverted and upright

Answer

sometimes inverted and sometimes upright

Question 3

The intensity of earthquake is measured in ____________

Accepted Answer

Richter scale

Answer

Beaufort scale

Answer

Mohs scale

Answer

Joules

Question 4

The most widely used pesticides function by disrupting

Accepted Answer

neurological cellular function

Answer

endocrine function

Answer

molecular events

Answer

renal function

Question 5

Diversity of organisms include three Domains such as

Accepted Answer

bacteria, archae, eukarya

Answer

binomial system of classification

Answer

monera, protista, fungi, plantae, animalia

Answer

membrane bound organelles, no peptidoglycan in cell walls, introns

Question 6

What do you call the rain that contains chemical waste and cause damage to plants and animals?

Accepted Answer

Acid rain

Answer

Smog

Answer

Monsoon rain

Answer

Seasonal rain

Question 7

Water heats up ______ and cools off _____ than land.

Accepted Answer

More slowly, more slowly

Answer

More quickly, more quickly

Answer

More quickly, more slowly

Answer

More slowly, more quickly

Question 8

In July, at middle latitudes in the Northern Hemisphere, the day is ____ long and is ____ with each passing day.

Accepted Answer

More than 12 hours; getting shorter

Answer

Less than 12 hours; getting longer

Answer

Less than 12 hours; getting shorter

Answer

More than 12 hours; getting longer

Question 9

The effect of interspecific competition on niches is to make them

Accepted Answer

smaller

Answer

larger

Answer

more triangular

Answer

change location