The CUET Environmental Science 2025 exam was held on 20 May 2025, and the question paper, answer key, and solution PDF are available for download here. This paper assesses knowledge of ecosystems, biodiversity, pollution, environmental policies, sustainable development, and climate change.
As per the revised exam pattern, students must answer 50 questions in 60 minutes, with a total of 250 marks. Each correct answer gets +5 marks, and each wrong answer leads to a –1 mark deduction.
CUET UG Environmental Science 2025 Question Paper with Answer Key PDF
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CUET UG Environmental Science 2025 Question Paper with Solutions
The Ecological Debt Day (Earth shoot day) is calculated as follows:
The first Earth Day was celebrated on _________.
Which of the following Environmental Ethics includes preservation of wild plants and animals, control of the human population and simple living?
Who among the following coined the term of "Oekology"?
Diversity of organism which share the same community/habitat and also called as local diversity, is referred to as
Match List-I with List-II
Choose the correct answer from the options given below:
The theory which states that "the population grows geometrically whereas resources like food grow arithmetically", was given by
The species that invades a bare area is referred to as _________.
Match List-I with List-II
Choose the correct answer from the options given below:
Break down of detritus into smaller particles by earthworm in an ecosystem is referred to as _________.
Arrange the following ecological succession in the lithosphere (rocks) from initial to final succession stages
(A) Moss stage
(B) Foliose-lichens stage
(C) Herbaceous stage
(D) Crustose-lichens stage
(E) Shrub stage
Choose the correct answer from the options given below:
Match List-I with List-II
Choose the correct answer from the options given below:
In which of the following types of population interactions, one species is benefited while another species is being harmed?
(A) Competition
(B) Parasitism
(C) Amensalism
(D) Predation
Choose the correct answer from the options given below:
Which of the following population growth equation correctly represents the Verhulst-Pearl Logistic growth equation? [Where N =population density at time t; r = intrinsic rate of natural increase; K= carrying capacity]
Energy flow in an ecosystem is always _____________________
Which one of the following is a primary air pollutant?
Most of the agricultural runoff and chemical fertilizers used in farming end up in water bodies, which leads to eutrophication. The nutrients responsible for eutrophication are
Which one of the following are the commonly used oxidants in COD (Chemical Oxygen Demand) assays?
Which one of the following soil types is most suitable for good plant growth and agriculture?
Which of the following are acid forming precursor gases and causes acid rain?
Which of the following diseases is NOT a water-borne disease?
Which of the following techniques is not appropriate/used for air pollution control?
Match List-I with List-II
Choose the correct answer from the options given below:
Arrange the following gases in increasing order of their concentrations in the Earth's atmosphere.
(A) Oxygen
(B) Carbon dioxide
(C) Nitrogen
(D) Argon
(E) Neon
Choose the correct answer from the options given below:
Match List-I with List-II
Choose the correct answer from the options given below:
In which process, waste material is burnt in absence of oxygen?
Catalytic converters fitted in vehicles are used for_____________________.
Which of the following traditional rainwater harvesting systems is/are commonly used in the state of Bihar?
(A) Eris
(B) Ahar
(C) Surangams
(D) Pyne
Choose the correct answer from the options given below:
Which of the following are associated with Gandhian concepts of holistic development of the nation?
(A) Antodaya
(B) Sarvodaya
(C) Panchayti Raj
(D) Reverse migration
Choose the correct answer from the options given below:
Which of the following is a suitable example of sedimentary cycle?
Decentralised Waste Water Treatment (DEWAT) system has_________.
(A) Low primary investment.
(B) Easy to operate and maintenance.
(C) Baffled filter reactor filled with stone for filtration.
(D) First three chambers for sedimentation of sludge.
Choose the correct answer from the options given below:
The resources which are available but are not yet explored due to lack of technology are referred to as __________.
Who among the following is known as the Father of the Green revolution and was also awarded the Nobel Peace Prize in the year 1970?
Organoponics is a labor-intensive form of local agriculture using organic methods. The concept of Organoponics was first evolved in __________.
"Sale of products like smartphones interconnected by a network" is a close example of ________________.
Arrange the following greenhouse gases in ascending order of their contribution to global warming.
(A) CH\(_4\)
(B) N\(_2\)O
(C) CFCs
(D) CO\(_2\)
Choose the correct answer from the options given below:
Arrange the following electromagnetic radiations in ascending order of their frequency.
(A) Micro-wave
(B) Radio-wave
(C) Gamma Rays
(D) UV Rays
(E) Infrared radiations
Choose the correct answer from the options given below:
Which of the following are push factors for rural to urban migration?
(A) Flood
(B) Political instability
(C) Better job opportunities
(D) High agricultural yields
Choose the correct answer from the options given below:
Ecosystem provides us food, raw materials, genetic resources. This is a close example of __________.
Which of the following treaty is known for ban on production and use of ozone depleting substances?
Comprehension Passage: Read the passage and answer the following questions (41 to 45).
International trade is the result of specialization in production. It benefits the world economy if different countries practice specialization and division of labor in the production of commodities or provision of services. Each kind of specialization can give rise to trade. Thus, international trade is based on the principle of comparative advantage, complementarity and transferability of goods and services. In principle, international trade should be mutually beneficial to trading partners. In modern times, trade is the basis of the world’s economic organization, such as the WTO, and is related to the foreign policy of nations. With well-developed transportation and communication systems, no country is willing to forgo the benefits derived from participation in international trade. There are various factors which can be the basis of international trade, such as differences in national resources, population factors (size and cultural diversity), stage of economic development, extent of foreign investment, transport facilities etc. The world’s natural resources are unevenly distributed because of differences in their physical settings i.e., geology, relief, soil and climate. Further, the size, distribution and diversity of people between countries affect the type and volume of goods traded. At different stages of economic development of countries, the nature of items traded undergo changes. Moreover, foreign investment can boost trade in developing countries that lack capital required for the development of mining, oil drilling, heavy engineering and plantation agriculture.
Question 41:
Which of the following is NOT an acceptable foundation for international trade?
Which among the following is a TRUE statement?
Which of the following is the closest example of internationally traded product due to climatic factors?
Which of the following was formerly known as the General Agreement for Tariffs and Trade?
An initial form of a trade system in primitive societies, where the direct exchange of goods was practiced, is known as
Comprehension Passage: Read the passage and answer the following questions (46 to 50).
Agricultural productivity is affected by physical, socioeconomic, institutional and organizational factors, besides the attitude of farmers and their managerial skills. On the whole, Indian agriculture doesn’t show high productivity, though there is an improvement in this sector since independence. Green revolution was introduced in 1967-68, as a new agricultural strategy woven around the usage of high yielding varieties (HYV) of seeds and included inputs such as chemical fertilizers and pesticides, assured water supplies, power supply at subsidized rates, access to credit facilities etc. As a result of Green Revolution, foodgrains production rose sharply. The main beneficiaries of Green revolution programme were Punjab, Haryana and western Uttar Pradesh in terms of wheat production and the deltaic regions of east coast in terms of rice. Ninety percent of the farmers in India are marginal farmer with low land holdings. They practice subsistence farming characterized by uncertain yields, low incomes and low capital formation. Additionally, the excess usage of chemical fertilizers and pesticides have harmed the long-term fertility of soil.
Question 46:
Which factor is not responsible for low agricultural productivity in India?
Which of the following is not an advantage of the Green Revolution in India ?
Subsistence farming is not characterised by ______________________.
Which one of the following is not a measure to improve agricultural productivity?
Which of the following state of India was not a direct beneficiary of green revolution in its begining stage in 1970s?
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