Deck 5: Environmental Science: Air Pollution, Population Growth, and Water Quality

Question 1

Air pollution is severe in

A)Cities
B)Industrialised areas
C)Densely populated areas
D)all of these

Answer 1

all of these

Question 2

Particulate pollutants are

A)are small solid particles and liquid droplets
B)liquid droplets in atmosphere
C)are small solid particles released into the atmosphere
D)all of these

Answer 2

are small solid particles and liquid droplets

Question 3

All are particulate pollutants except

A)dust
B)ozone
C)soot
D)smoke

Answer 3

ozone

Question 4

Fine organic or inorganic particles suspended in air is called

A)particulate pollutant
B)gaseous pollutant
C)aerosol
D)none of these

Question 5

Which of the following is a secondary pollutant

A)CO₂
B)CO
C)O₃
D)SO₂

Question 6

Air pollution can be of

A)natural origin
B)artificial or man made origin
C)both a and b
D)b only

Question 7

Mobile combustion accounts

A)10-20% of air pollution
B)40-50% of air pollution
C)50-60 % of air pollution
D)5-10 % of air pollution

Question 8

The true statement about 'green house effect' is that it is

A)caused by combination of many gases
B)caused by CO₂
C)caused only by CO₂, CFC, CH₄ and NO₂ gases
D)None of these

Question 9

The supersonic jets cause pollution by the thinning of

A)CO₂ layer
B)SO₂ layer
C)O₃ layer
D)O₂ layer

Question 10

Carbon mono oxide is a pollutant because

A)it reacts with O₂
B)it inhibits glycolysis
C)makes nervous system inactive
D)reacts with haemoglobin

Question 11

A population is a group of

A)individuals in a species
B)species in a community
C)communities in an ecosystem
D)individuals in a family

Question 12

What is the most important factor for the success of animal population?

A)natality
B)adaptability
C)unlimited food
D)inter species activity

Question 13

The formula for exponential population growth is

A)dN/dt = rN
B)dt/dN = rN
C)dN/rN = dt
D)rN/dN = dt

Question 14

Human population growth curve is a:

A)S shaped curve
B)parabola curve
C)J shaped curve
D)zig zag curve

Question 15

Exponential growth occurs when there is

A)a great environmental resistance
B)no environmental resistance
C)no biotic potential
D)a fixed carrying capacity

Question 16

A human population is small, there is a greater chance of :

A)gene flow
B)genetic drift
C)natural selection
D)mutation

Question 17

In a population, unrestricted reproductive capacity is called as

A)carrying capacity
B)biotic potential
C)birth rate
D)fertility rate

Question 18

The concept that 'population tends to increase geometrically while food supply increases arithmetically' was put forward by

A)Adam Smith
B)Charles Darwin
C)Thomas Malthus
D)Stuart Mill

Question 19

Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called

A)fecundity
B)mortality
C)environmental resistances
D)biotic control

Question 20

The carrying capacity of a population is determined by its

A)population growth rate
B)natality
C)mortality
D)limiting resources

Question 21

The major pollutant from automoblie exhaust is

A)NO
B)CO
C)SO₂
D)Soot

Question 22

The green house gases, otherwise called radioactively active gases includes

A)Carbon dioxide
B)CH₄
C)N₂O
D)All of these

Question 23

Algal bloom results in

A)Global warming
B)Salination
C)Eutrophication
D)Biomagnification

Question 24

A high Biological Oxygen Demand (BOD) indicates that:

A)water is pure
B)absence of microbial action
C)Low level of microbial pollution
D)High level of microbial pollution

Question 25

The effects of radioactive pollutants depends upon

A)Rate of diffusion
B)energy releasing capacity
C)rate of deposition of the contaminant
D)all of these