Question 1

Air pollution is severe in
A)Cities
B)Industrialised areas
C)Densely populated areas
D)all of these

Accepted Answer

Air pollution is severe in cities, industrialized areas, and densely populated areas due to the concentration of vehicles, industrial activities, and large numbers of people, all of which contribute to higher levels of pollutants in the air.

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

Accepted Answer

A

Question 3

All are particulate pollutants except
A)dust
B)ozone
C)soot
D)smoke

Accepted Answer

Ozone is a gaseous pollutant, not a particulate one. Dust, soot, and smoke are all examples of particulate pollutants, which consist of tiny particles or droplets in the air.

Question 4

Fine organic or inorganic particles suspended in air is called
A)particulate pollutant
B)gaseous pollutant
C)aerosol
D)none of these

Accepted Answer

The answer of Fine organic or inorganic particles suspended in...

Question 5

Which of the following is a secondary pollutant A)CO₂ B)CO C)O₃ D)SO₂

Accepted Answer

Ozone (O3) is a secondary pollutant because it is not emitted directly into the air but forms through chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.

Question 6

Air pollution can be of
A)natural origin
B)artificial or man made origin
C)both a and b
D)b only

Accepted Answer

Air pollution can originate from natural sources such as volcanoes, wildfires, and dust storms, as well as from artificial or man-made sources like vehicle emissions, industrial discharges, and the burning of fossil fuels.

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

Accepted Answer

The answer of Mobile combustion accounts
A)10-20% of air pollution
B)40-50% of...

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

Accepted Answer

The answer of The true statement about 'green house effect'...

Question 9

The supersonic jets cause pollution by the thinning of A)CO₂ layer B)SO₂ layer C)O₃ layer D)O₂ layer

Accepted Answer

The correct answer is the ozone layer, which is represented by the chemical formula O3. In the options given, "O₃" correctly decodes to O3, indicating the ozone layer. Supersonic jets contribute to the thinning of the ozone layer through emissions of nitrogen oxides and other pollutants at high altitudes.

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

Accepted Answer

Carbon monoxide is a pollutant primarily because it reacts with hemoglobin in the blood, forming carboxyhemoglobin, which significantly reduces the blood's oxygen-carrying capacity. This can lead to serious health issues, including impaired cognitive and motor functions, and in severe cases, death.

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

Accepted Answer

A population refers to a group of individuals belonging to the same species that live in a specific area.

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

Accepted Answer

Adaptability is the most crucial factor for the success of an animal population because it allows animals to survive and thrive in changing environments, find food, avoid predators, and reproduce, ensuring the long-term survival and success of the species.

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

Accepted Answer

The correct formula for exponential population growth is dN/dt = rN, where dN/dt represents the rate of change of the population size (N) over time (t), and r is the intrinsic rate of increase of the population.

Question 14

Human population growth curve is a:
A)S shaped curve
B)parabola curve
C)J shaped curve
D)zig zag curve

Accepted Answer

The answer of Human population growth curve is a:
A)S shaped...

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

Accepted Answer

Exponential growth occurs in the absence of environmental resistance, allowing populations to grow at an increasing rate.

Question 16

A human population is small, there is a greater chance of :
A)gene flow
B)genetic drift
C)natural selection
D)mutation

Accepted Answer

In small populations, genetic drift has a more significant effect because random changes in allele frequencies can lead to large changes over time.

Question 17

In a population, unrestricted reproductive capacity is called as
A)carrying capacity
B)biotic potential
C)birth rate
D)fertility rate

Accepted Answer

The answer of In a population, unrestricted reproductive capacity is...

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

Accepted Answer

Thomas Malthus is known for this concept, which he outlined in his work "An Essay on the Principle of Population" published in 1798. He argued that while population grows exponentially, resources such as food supply grow at a linear rate, leading to potential overpopulation and resource scarcity.

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

Accepted Answer

Mortality is the force opposite to fecundity, which is the ability to reproduce at a given rate.

Question 20

The carrying capacity of a population is determined by its
A)population growth rate
B)natality
C)mortality
D)limiting resources

Accepted Answer

The carrying capacity of a population is determined by its limiting resources, which are the environmental factors that restrict population growth and size. These can include food, water, shelter, and other necessities.

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

Air pollution is severe in

Particulate pollutants are

All are particulate pollutants except

Fine organic or inorganic particles suspended in air is called

Which of the following is a secondary pollutant

Air pollution can be of

Mobile combustion accounts

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

The supersonic jets cause pollution by the thinning of

Carbon mono oxide is a pollutant because

A population is a group of

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

The formula for exponential population growth is

Human population growth curve is a:

Exponential growth occurs when there is

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

In a population, unrestricted reproductive capacity is called as

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

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

The carrying capacity of a population is determined by its