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.

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

a.Variation

b.Unimited access to resource

c.Harmony

d.Homogeneity

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

a.China

b.USA

c.India

d.Brazil

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

a.reduced inequality

b.Increase resources

c.Increase land erosion

d.Technological improvement

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

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

b.To stimulate sexual activity

c.To reinforce social bonds

d. To remove parasites from other individuals

5. Long path optical measurement uses _____________

a.IR Radiation

b.None of the above

c.Ultraviolet radiation

d.Both a and b

6. Soil colloidal particle shows the phenomena

a.All of the above

b.Plasticity

c.Flocculation

d.Adhesion and Cohension

7. The Earth summit was organised by

a.UNICEF

b.WHO

c.UNESCO

d.UNCED

8. 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.32

b.16

c.8

d.64

9. In which year was the Green Revolution started ?

a.1965

b.1980

c.1978

d.1977

10. 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.Local plants

b.Climate

c.Ecological system

d.Human Resource

11. Which has the maximum rate of deforestation?

a.Tropical Zone

b.Temperate Zone

c.Northern Forest

d.Desert Zone

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

a.Industrial Tributaties

b.Automobile Laxity

c.Sewage and Garbage

d.Herbicide and Insecticide

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

a.Thermal Power

b.Atomic Power

c.Hydro Electric power

d.Natural gas

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

a.Autotrophic zone

b.Schutzdecke zone

c.Heterotrophic zone

d.Electrolytic zone

15. 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

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

a.London

b.Italy

c.Toronto

d.Montreal

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

a.Hydrosphere

b.Biosphere

c.Lithosphere

d.Total Wild life

18. Altruism can be defined as

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

b.Working together for a common goal

c.Ensuring that all individuals have equal access to resources

d.Buying patronising Band Aid records at Christmas

19. Carbonates in water produce

a.Temporary hardness

b.Acidity

c.Permanent hardness

d.Both a and b

20. The phenomenon slickenside found in which soil

a.Vertisol

b.Inceptisol

c.Spodosa

d.Gelisol

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

a.All of the mentioned

b.Human made CO₂ emissions

c.Natural CO₂ emissions

d.Industrial CO₂ emissions

22. What is the benefit of rain water storage?

a.Protection from soil erosion

b.Reduce the scarcity of water

c.Recharging ground water level

d.Respite from floods

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

a.50 million

b.50,000

c.2.5 Million

d.250,000

24. The concept of survival of the fittest refers to

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

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

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

d.The individuals who work out the most

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

a.Reflection

b.Refraction

c.Insolation

d.Radiation

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

a.The theory of absolute advantage

b.The Heckscher-Ohlin theory

c.The theory of mercantilism

d.The theory of comparative advantage

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

a.The opinions of international legal experts

b.International Treaties

c.Verdicts of the International Criminal court (ICC)

d.Custom

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

a.Soil Pollution

b.Thermal Pollution

c.Water Pollution

d.Noise pollution

29. Nitrogen oxide affects human health by__________

a.Causing irritation to the eyes and skin

b.Decreasing blood's ability to transport oxygen

c.Aggravating asthma Problem

d.None of the above

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

a.Decreased rate of photosynthesis in vegetation

b.Loss of fertile delta region as for agriculture

c.Increase frequency of hurricanes

d.Shrinking of the polar ice regions

31. What is 'HYV'

a.High yielding variety

b.Higer yeild variety

c.High yielding crops

d.Decreased yielding variety

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

a.Diminshing returns to natural resources

b.All of the above

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

d.Rapid labour fore growth

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

a.Has fixed exchange rates

b.Allows private ownership of capital

c.Conducts trade with other countries

d.Has flexible exchange rates

34. 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 country claming to own the moon

c.A disputed National Election

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

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

a.Biodiversity

b.Carbon sequestration

c.Winter kill

d.Lack of clean water

36. Disadvantages of green revolution

a.It decreases the production of the crops

b.It increases the production of the crops

c.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.

d.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.

37. 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.Globalisation, growing economic linkages among countries

d.To produce and consume all goods without trade

38. The air pollutants are mainly classified as____________

a.Natural or anthripogennic pollutants

b.None of the above

c.Primary and secondary pollutants

d.Point source and non-point source

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

a.Less than 1

b.Between 1% and 15%

c.More than 2 %

d.Between 15% and 2%

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

a.Polar Region

b.Rier

c.Desert

d.Tropical Region

41. What was the green revolution based on ?

a.Introduction of new plant varietiees

b.Planting more trees

c.Planting of trees

d.Crop Production

42. What sort of data describes numerical data?

a.Qualitative

b.Quantitive

c.Idiographic

d.Nomothetic

43. 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

44. EL-Nino is

a.Sea Storm

b.Trophical Disturbance

c.Warm Ocean Current

d.Another name of Typhoon

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

a.Hydrolysis

b.Dissolution

c.Oxidation

d.None of the above

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

a.30 ppm

b.15 ppm

c.10 ppm

d.45 ppm

47. Which of the following is an air pollutant?

a.Carbon Monoxide

b.Nitrogen

c.Oxygen

d.Carbon Dioxide

48. Global warming is expected to result in

a.All of these

b.Increase in sea level

c.Change in coastal line

d.Change in crop pattern

49. The largest ecosystem of earth is

a.Biosphere

b.Biome

c.Lithosphere

d.Hydrospere

50. During Inversion:

a.Temperature remians constant

b.None of the above

c.Temperature increases with altitude

d.Temerature decreases with altitudfe

51. 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.Terrace Farming

b.Rock dam

c.Mulching

d.Contour barriers

52. The Ozone hole over Antarctica was discovered in

a.1987

b.1985

c.1978

d.1975

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

a.1 and 4

b.1,2 and 4

c.1 and 3

d.2, 3 and 4

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

a.Some of the statement is true but not completely

b.TRUE

c.Some of the Statement is false but not completely

d.FALSE

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

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

d. It increases the production of the crops

56. VOC stands for _______________

a.Varying organic components

b.Viable organic components

c.Volatile organic components

d.Virtual organic carriage

57. The environmental lapse rate is found to be:

a.– 6.5°C/km

b. 8.6°C/km

c. 5.6°C/km

d. 6.5°C/km

58. Transportation cost of trade affects:

a.Global supply chains

b.Pattern of trade

c.All of the above

d.Boundries bwteen tradable and non-tradable goods

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

a.Corn

b.Tomato

c.Onion

d.Potato

60. Land reforms policies in India have met with

a.Complete failure

b.Tremendous success

c.None of the above

d.Limited success

61. What are the four factor endowments?

a.Types of technology

b.International differences in climate

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

d.Material inputs used up in the process of production

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

a.Sulphur tera Oxide

b.Sulphur dioxide

c.Sulphur tetra oxide

d.Ozone

63. 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

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

a.Freon

b.Chlorofluorocarbon

c.Carbon Monoxide

d.Carbon Dioxide

65. Which fertiliser produce acidity in soil

a.Calcium ammonium nitrate

b.Sodium nitrate

c.Ammonium sulphate

d.Calcium notrate

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

a.Monsoon

b.Equatorial

c.Tidal Flat

d.Mixed

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

a.Ecological balance

b.Absorption of carbon dioxide

c.Conservation of wild

d.More rain

68. Cast iron pipes are generally preferred to, because

a.Of ease to join

b.All of the above

c.Of longer life

d.Of moderate cost

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

a.1st October

b.1st May

c.1st December

d.5th June

70. Anthropogenic is a _______-

a.Both a and b

b.None to fhe above

c.Natural Environment

d.Modified Environment

71. When was the World Wildlife Fund founded?

a.1992

b.1965

c.1961

d.1969

72. 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, 3, 2

b.4, 1, 2, 3

c.4, 1, 3, 2

d.1,4, 2, 3

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

a.International Court of Justice (ICJ)

b.Eurpoean Court of Justice (ECJ)

c.Permanent court of International Justice (PCIJ)

d.International Criminal Court (ICC)

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

a.Carbon Dioxide

b.Nitrogen Dioxide

c.Nitrogen

d.Carbon Monoxide

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

a.Liberalism

b.Marxism

c.Realism

d.Critical Theory

76. 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.Sulphur dioxide

c.Carbon monoxide

d.Nitrous dioxide

77. 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.Rock dam

b.Contour barriers

c.Shelter belts

d.Mulching

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

a.Ethnocentrism

b.Anthropocentrism

c.Egocentrism

d.Narcissim

79. Rio Summit is associated with

a.Wet Lands

b.Convention on Biological Diversity

c.Green House Gases

d.Ozone depletion

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

a.Beef

b.Pork

c.Sugar

d.Meat of Goat

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

a.Water Vapour

b.Chlorofluorocarbon

c.Carbon monoxide

d.Oxygen

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

a.Temperature variation

b.Conditions of sunlights

c.Availability of water

d.Wind

83. The yield rates of crops between 1950 and 1998

a.Slighlty declined

b.Dramitically declined

c.Dramatically increased

d.None of the above

84. The cause of reduction of forest coverage is

a.Tourism and Pilgrimage

b.Rising Population

c.Manufacturing Industry

d.Agriculture

85. Sustainable development means maximising

a.None of the above

b.Income inequality

c.Economic growth

d.The productivity of produced assets

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

a.Product price

b.The introduction of new products

c.Product design and quality

d.All of the above

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

a.Parthenium

b.Elephant Grass

c.Water Hyacinth

d.Both b and c

88. Quantity of soil to be taken for texture analysis

a.10g

b.20g

c.40g

d.30g

89. 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

90. Environment includes

a.Biotic component

b.Oxygen and Nitrogen

c.Abiotic Component

d.Abiotic and iotic component

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

a.Natural Selection

b.Evolution

c.Versatility

d.Survival of the fittest

92. The demographic transition is

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

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

c.None of the above is correct

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

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

a.Fourth Plan

b.Third Plan

c.Second Plan

d.First Plan

94. What sort of data describes meaning and experience?

a.Qualitative

b.Nomothetic

c.Idiographic

d.Quantitive

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

a.HCI

b.Flue gases

c.Stack Gases

d.None of the above

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

a.poor implementation

b.Lack of political will

c.Shortcoming in legislation

d.All of these

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

a.Florida

b.Osaka

c.Montreal

d.Geneva

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

a.Less than 100 ppm

b.Less than 500 ppm

c.Less than 700 ppm

d.Less than 300 ppm

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

a. Industries that sell to domestic and foreign buyers

b.Industries that sell to only foreign buyers

c.Import-competing industries

d.Industries in which there are neither imports nor exports

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

a.They have a different diet

b.The females exclusively mate one gorilla

c.They live in large communities

d.They have a lower level of sexual activity

101. The scope of land reforms does not include-

a.Intermediaries removal

b.All above

c.Tenancy reforms

d.Land reforms can encompass law

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

Environment Science MCQ Question Answers for CUET 2025

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