CUET 2025 Environment Science MCQs for Practice

Environment Science MCQ Question Answers for CUET 2025

Environment Science MCQs– Practice the Environment Science MCQs suitable for various Entrance Exams including CUET. Learn and practice Environment Science questions and answers. Environment Science MCQ questions are very helpful for various competitive exams. CUET is a Common University Entrance Test that is now mandatory to take admission to Central Universities in India. Environment Science MCQ questions are based on the latest CUET 2025 exam pattern and other entrance exams, so that you can have a fair idea about exam trends that will be followed for various entrance exams.

Please wait...

1. Which of the following is an air pollutant?

a.Carbon Monoxide

b.Carbon Dioxide

c.Nitrogen

d.Oxygen

2. Which of the following has maximum bio-diversity?

a.Tropical Region

b.Desert

c.Rier

d.Polar Region

3. The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?

a.Rock dam

b.Mulching

c.Terrace Farming

d.Intercropping

4. What was the green revolution based on ?

a.Planting more trees

b.Crop Production

c.Introduction of new plant varietiees

d.Planting of trees

5. The cause of reduction of forest coverage is

a.Tourism and Pilgrimage

b.Rising Population

c.Agriculture

d.Manufacturing Industry

6. Sustainable development means maximising

a.Economic growth

b.None of the above

c.The productivity of produced assets

d.Income inequality

7. For which of the following reasons, it is necessary to secure a large area for forest?

a.Ecological balance

b.More rain

c.Absorption of carbon dioxide

d.Conservation of wild

8. The method of soil conservation in the coastal and dry regions where rows of trees are planted to check the wind movement to protect soil cover is called

a.Contour barriers

b.Rock dam

c.Mulching

d.Shelter belts

9. According to the United Nations, the world’s major environmental problems include:

a.The quality of fresh water

b.All of the above

c.Deforestation

d.Ozone depletion

10. If a nation has an open economy it means that the nation:

a.Has fixed exchange rates

b.Has flexible exchange rates

c.Allows private ownership of capital

d.Conducts trade with other countries

11. What is the ecological system integrating all living beings and their relationships?

a.Total Wild life

b.Biosphere

c.Lithosphere

d.Hydrosphere

12. Global warming is expected to result in

a.Change in crop pattern

b.Change in coastal line

c.All of these

d.Increase in sea level

13. Which one of the following ecosystems covers the largest area of the earth’s surface?

a.Grassland Ecosystem

b.Mountain Ecosystem

c.Desert Ecosystem

d.Marine Ecosystem

14. Of the solar energy coming into the Biosphere, what percentage of it is actually used in photosynthesis?

a.More than 2 %

b.Less than 1

c.Between 15% and 2%

d.Between 1% and 15%

15. Transportation cost of trade affects:

a.Pattern of trade

b.Boundries bwteen tradable and non-tradable goods

c.All of the above

d.Global supply chains

16. The demographic transition is

a.The period between preindustrial and modern equality of crude birth and death rates

b.The period when both crude birth and death rates rise

c.The period when crude birth and death rates are equal

d.None of the above is correct

17. The largest ecosystem of earth is

a.Biome

b.Lithosphere

c.Biosphere

d.Hydrospere

18. Soil is eroded heavily due to deforestation, it affects the flowing of surface water badly. Which of the following is badly affected by these causes

a.Climate

b.Human Resource

c.Ecological system

d.Local plants

19. The method of soil conservation in which rocks are piled up to slow down the flow of water which prevents gullies and further soil loss is called

a.Contour barriers

b.Rock dam

c.Terrace Farming

d.Mulching

20. Land reforms policies in India have met with

a.Limited success

b.Complete failure

c.None of the above

d.Tremendous success

21. Disadvantages of green revolution

a.In order to protect crops from different types of disease caused by pest as well as the damages caused by insects, the farmers started using pesticides and insecticides at a high amount.

b.It increases the production of the crops

c.It decreases the production of the crops

d.As the water and soil from the farming land are ruined either due to rain or flood, all the toxic content of pesticides and other chemicals present in the soil gets mixed with the nearby water source which leads to the death of aquatic organisms, mostly fish.

22. The World’s largest biofuel plant has been established with a production capacity of 100 million litres per year, is located in

a.India

b.Brazil

c.USA

d.China

23. What does the phrase “anthropogenic CO₂ emissions” mean?

a.Industrial CO₂ emissions

b.Natural CO₂ emissions

c.All of the mentioned

d.Human made CO₂ emissions

24. The Ozone hole over Antarctica was discovered in

a.1975

b.1985

c.1987

d.1978

25. In which year was the Green Revolution started ?

a.1977

b.1978

c.1980

d.1965

26. What is the cause of the ‘Greenhouse effect’?

a.Carbon Dioxide

b.Nitrogen

c.Nitrogen Dioxide

d.Carbon Monoxide

27. Which is the first zone of purification in a sand bed?

a.Autotrophic zone

b.Schutzdecke zone

c.Heterotrophic zone

d.Electrolytic zone

28. The evolution of hominids is generally believed to have begun around how many years ago?

a.50 million

b.2.5 Million

c.50,000

d.250,000

29. Carbonates in water produce

a.Acidity

b.Temporary hardness

c.Permanent hardness

d.Both a and b

30. Cast iron pipes are generally preferred to, because

a.Of longer life

b.All of the above

c.Of moderate cost

d.Of ease to join

31. Male gorillas have relatively small testicles compared to those of a chimpanzee because

a.They have a lower level of sexual activity

b.They live in large communities

c.The females exclusively mate one gorilla

d.They have a different diet

32. Long path optical measurement uses _____________

a.None of the above

b.Both a and b

c.Ultraviolet radiation

d.IR Radiation

33. Which of these political issues does not fall under Public International Law?

a.A Policeman torturing a criminal suspect in a acountry where this is not considered illegal

b.A disputed National Election

c.Mining on the seabed of an ocean outside of territorial waters

d.A country claming to own the moon

34. The scope of land reforms does not include-

a.Intermediaries removal

b.Tenancy reforms

c.Land reforms can encompass law

d.All above

35. The environmental lapse rate is found to be:

a. 8.6°C/km

b.– 6.5°C/km

c. 5.6°C/km

d. 6.5°C/km

36. During Inversion:

a.Temperature remians constant

b.Temerature decreases with altitudfe

c.Temperature increases with altitude

d.None of the above

37. Which of these is the chief court of the UN?

a.Eurpoean Court of Justice (ECJ)

b.Permanent court of International Justice (PCIJ)

c.International Court of Justice (ICJ)

d.International Criminal Court (ICC)

38. International trade forces domestic firms to become more competitive in terms of

a.The introduction of new products

b.All of the above

c.Product price

d.Product design and quality

39. What are some of the costs of a high fertility rate and rapid population growth?

a.All of the above

b.increase in the ration of depenedent to working age population

c.Diminshing returns to natural resources

d.Rapid labour fore growth

40. Which of the following plants is extremely sensitive towards sulphur dioxide?

a.Potato

b.Onion

c.Corn

d.Tomato

41. Rio Summit is associated with

a.Ozone depletion

b.Wet Lands

c.Green House Gases

d.Convention on Biological Diversity

42. The correct sequence in decreasing order of the albedo values of these ecosystem is::,1. Taiga,2. Tropical evergreen,3. Tropical deciduous,4. Tundra

a.1,4, 2, 3

b.4, 1, 2, 3

c.4, 1, 3, 2

d.1, 4, 3, 2

43. Ozone depletion is caused due to increase in the level of

a.Water Vapour

b.Oxygen

c.Chlorofluorocarbon

d.Carbon monoxide

44. What term describes the idea that humans consider themselves to have a superior and fundamental place in the universe?

a.Egocentrism

b.Ethnocentrism

c.Anthropocentrism

d.Narcissim

45. The concept of survival of the fittest refers to

a.The individuals who work out the most

b.The individuals who have characteristics that fit in best to the environment

c. The individuals who are the strongest and most likely to survive

d.The individuals who have characteristics that make them more attractive and hence more likely to get a mate

46. The Earth summit was organised by

a.UNCED

b.WHO

c.UNICEF

d.UNESCO

47. Nitrogen oxide affects human health by__________

a.Causing irritation to the eyes and skin

b.Aggravating asthma Problem

c.Decreasing blood's ability to transport oxygen

d.None of the above

48. How many of your first cousins (your uncle and aunt's children) would need to survive to maintain the genetic presence in the world as you?

a.8

b.16

c.32

d.64

49. The air pollutants are mainly classified as____________

a.Primary and secondary pollutants

b.Natural or anthripogennic pollutants

c.Point source and non-point source

d.None of the above

50. The radiant energy received by the Earth from the sun is

a.Refraction

b.Radiation

c.Insolation

d.Reflection

51. Altruism can be defined as

a.Ensuring that all individuals have equal access to resources

b.An act that benefits the recipient at a cost to the donor

c.Working together for a common goal

d.Buying patronising Band Aid records at Christmas

52. Which of these is not an official source of Public International Law?

a.The opinions of international legal experts

b.Verdicts of the International Criminal court (ICC)

c.International Treaties

d.Custom

53. Which of the following represents the allowed rate of CO₂?

a.Less than 500 ppm

b.Less than 700 ppm

c.Less than 300 ppm

d.Less than 100 ppm

54. Which of the following reduces the planet’s carrying capacity?

a.Increase resources

b.Technological improvement

c.Increase land erosion

d.reduced inequality

55. Which of the following is a major health consequence of environmental degradation, especially in developing countries?

a.Carbon sequestration

b.Winter kill

c.Biodiversity

d.Lack of clean water

56. Which of the following gas affects human health by reducing the blood’s ability to carry oxygen to different parts of the body?

a.Carbon Dioxide

b.Carbon monoxide

c.Sulphur dioxide

d.Nitrous dioxide

57. What sort of data describes numerical data?

a.Quantitive

b.Qualitative

c.Idiographic

d.Nomothetic

58. Which fertiliser produce acidity in soil

a.Ammonium sulphate

b.Calcium notrate

c.Sodium nitrate

d.Calcium ammonium nitrate

59. World Environmental day is celebrated on ________ every year.

a.5th June

b.1st May

c.1st October

d.1st December

60. Advantages of green revolution

a.The usage of a high quantity of pesticides and insecticides affects the plants

b. It increases the production of the crops

c.In order to protect crops from different types of disease caused by pest as well as the damages caused by insects, the farmers started using pesticides and insecticides at a high amount.

d.It explains the modern farming method ,example, irrigation method,

61. Environment includes

a.Abiotic Component

b.Biotic component

c.Abiotic and iotic component

d.Oxygen and Nitrogen

62. What is the biggest source of pollution in the world?

a.Sewage and Garbage

b.Herbicide and Insecticide

c.Automobile Laxity

d.Industrial Tributaties

63. Which of the following is an important Greenhouse Gas?

a.Carbon Monoxide

b.Carbon Dioxide

c.Chlorofluorocarbon

d.Freon

64. Among the following, the only secondary pollutant is:

a.Sulphur tera Oxide

b.Sulphur tetra oxide

c.Sulphur dioxide

d.Ozone

65. Which of the following environments supports the growth of Mangrove Swamp?

a.Tidal Flat

b.Monsoon

c.Equatorial

d.Mixed

66. Many primates engage in social grooming, which is a very time-consuming activity. The main function of this is

a.To stimulate sexual activity

b. To remove parasites from other individuals

c.To ensure the good health of all members of the group

d.To reinforce social bonds

67. The Biosphere is a region of earth which supports life. It includes- 1.Hydrosphere, 2.Lithosphere, 3.Stratosphere, 4.Troposphere

a.2, 3 and 4

b.1,2 and 4

c.1 and 3

d.1 and 4

68. Which of the following is least likely to be an effect of global warming?

a.Decreased rate of photosynthesis in vegetation

b.Increase frequency of hurricanes

c.Loss of fertile delta region as for agriculture

d.Shrinking of the polar ice regions

69. The nitrate concentration in domestic water supplies, is generally limited to

a.15 ppm

b.45 ppm

c.30 ppm

d.10 ppm

70. What is 'HYV'

a.Higer yeild variety

b.High yielding crops

c.Decreased yielding variety

d.High yielding variety

71. Soil colloidal particle shows the phenomena

a.Adhesion and Cohension

b.Flocculation

c.Plasticity

d.All of the above

72. Anthropogenic is a _______-

a.None to fhe above

b.Both a and b

c.Natural Environment

d.Modified Environment

73. What type of chemical weathering is enhanced by acid rain?

a.Oxidation

b.Dissolution

c.Hydrolysis

d.None of the above

74. When was the World Wildlife Fund founded?

a.1965

b.1992

c.1969

d.1961

75. Being able to adapt to changes in the environment is referred to as what?

a.Survival of the fittest

b.Evolution

c.Natural Selection

d.Versatility

76. What sort of data describes meaning and experience?

a.Quantitive

b.Nomothetic

c.Qualitative

d.Idiographic

77. Which of the following is a renewable source of energy?

a.Thermal Power

b.Atomic Power

c.Hydro Electric power

d.Natural gas

78. What was the first economic theory of international trade to be developed?

a.The theory of comparative advantage

b.The Heckscher-Ohlin theory

c.The theory of mercantilism

d.The theory of absolute advantage

79. The yield rates of crops between 1950 and 1998

a.Dramatically increased

b.Dramitically declined

c.None of the above

d.Slighlty declined

80. Where is the secretariat of the Conference on Biological Diversity?

a.Toronto

b.Montreal

c.London

d.Italy

81. The first protocol to ban the emissions of chlorofluorocarbons in the atmosphere was made in

a.Osaka

b.Florida

c.Geneva

d.Montreal

82. How is comparative advantage defined?

a.You produce the things you are especially good at, and buy from others, the goods you are less efficient in producing.

b.How the world actually works

c.To produce and consume all goods without trade

d.Globalisation, growing economic linkages among countries

83. International Trade is most likely to generate short-term unemployment in:

a.Import-competing industries

b.Industries in which there are neither imports nor exports

c.Industries that sell to only foreign buyers

d. Industries that sell to domestic and foreign buyers

84. Which of the following is not poisonous to humans?

a.Stack Gases

b.None of the above

c.HCI

d.Flue gases

85. Which has the maximum rate of deforestation?

a.Temperate Zone

b.Desert Zone

c.Northern Forest

d.Tropical Zone

86. Quantity of soil to be taken for texture analysis

a.10g

b.30g

c.40g

d.20g

87. The phenomenon slickenside found in which soil

a.Inceptisol

b.Spodosa

c.Gelisol

d.Vertisol

88. Due to growing demand of which of the following product, tropical forest are being damaged the most

a.Pork

b.Sugar

c.Beef

d.Meat of Goat

89. Among the following climatic factors, which one has the least effect upon a terrestrial ecosystem?

a.Availability of water

b.Wind

c.Conditions of sunlights

d.Temperature variation

90. A no-trade world will have which of the following characteristics

a.There will be no distortions or externalities

b.Consumers across countries will have identical and homogenous tastes

c.Countries will have same relative endowments of production factors

d.All of the above

91. The basic purpose of introducing land reforms has been adversely affected due to

a.All of these

b.Lack of political will

c.Shortcoming in legislation

d.poor implementation

92. In order for natural selection to occur, what must there be amongst individuals of each generation?

a.Homogeneity

b.Harmony

c.Unimited access to resource

d.Variation

93. EL-Nino is

a.Warm Ocean Current

b.Another name of Typhoon

c.Sea Storm

d.Trophical Disturbance

94. Which of the following types of pollution is Cultural eutrophication?

a.Water Pollution

b.Thermal Pollution

c.Soil Pollution

d.Noise pollution

95. What are the four factor endowments?

a.Material inputs used up in the process of production

b.Types of technology

c.National resources, labour, physical capital and human capital

d.International differences in climate

96. Long path optical measurement has a range of several kilometres.

a.FALSE

b.Some of the Statement is false but not completely

c.TRUE

d.Some of the statement is true but not completely

97. Which of the following aquatic plants is effective in preventing the water-pollution caused by industrial waste?

a.Water Hyacinth

b.Elephant Grass

c.Both b and c

d.Parthenium

98. What is the benefit of rain water storage?

a.Reduce the scarcity of water

b.Respite from floods

c.Recharging ground water level

d.Protection from soil erosion

99. VOC stands for _______________

a.Volatile organic components

b.Viable organic components

c.Varying organic components

d.Virtual organic carriage

100. The ‘natural law’ perspective on international law is most associated with which IR theory

a.Marxism

b.Realism

c.Critical Theory

d.Liberalism

101. The first authoritative exposition of the national policy on tenancy reform is found in the document of the

a.First Plan

b.Second Plan

c.Fourth Plan

d.Third Plan

CUET 2025 Environment Science MCQ Question Answers – 100 MCQs for Practice

Environment Science MCQ Question Answers for CUET 2025

1 Comment

Submit a Comment Cancel reply

General

Important Days

CBSE School Lessons

Popular Pages