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Environmental Science (Theory) Specimen Paper 2024-2025 ISC (Commerce) Class 12 Question Paper Solution

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Environmental Science (Theory) [Specimen Paper]
Marks: 70 CISCE
ISC (Commerce)
ISC (Arts)
ISC (Science)

Academic Year: 2024-2025
Date: April 2025
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  1. You are allowed additional 15 minutes for only reading the question paper.
  2. You must NOT start writing during the reading time.
  3. This question paper has 6 printed pages. 
  4. It is divided into three sections and has 12 questions in all.
  5. All questions are compulsory. Answer all questions. 
  6. Section A has fourteen subparts which are very short answer questions. Each question carries 1 mark.
  7. While attempting Multiple Choice Questions in Section A, you are required to write only ONE option as the answer.
  8. Section B has seven questions which are short answer questions. Each question carries 4 marks.
  9. Section C has four questions which are long answer questions. Each question carries 7 marks.
  10. Internal choices have been provided in two questions in Section B and in one question in Section C.
  11. The intended marks for questions are given in brackets [ ].

SECTION A - 14 MARKS
[14]1
[1]1.i

Potential resources are those resources that already exist in nature but are not used for the benefits of human beings.

Which one of the following represents Potential Resources?

Hydroelectric power generated by Bhakra Nangal Dam.

Crude oil discovered in Rampur district of Uttar Pradesh.

Existence of water in three forms on earth.

Timber derived from Corbett National Park and transported to various cities.

Concept: undefined - undefined
Chapter: [0.01] Definition: Resources; Scarcity and Growth; Natural Resource Accounting
[1]1.ii | Given below are two statements marked Assertion and Reason. Read the two statements carefully and choose the correct option.

Assertion: Malthus held that human population would have to resort to subsistence living.

Reason: He believed that the population grew arithmetically and resources grew geometrically.

Which one of the following is correct?

Both Assertion and Reason are true, and Reason is the correct explanation for Assertion.

Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion.

Assertion is true and Reason is false.

Assertion is false and Reason is true.

Concept: undefined - undefined
Chapter: [0.02] Human Populations
[1]1.iii

Eris are popular rainwater harvesting systems of Tamil Nadu in India. Which one of the following categories do these systems fall under?

Micro irrigation

Macro irrigation

Modern irrigation

Ultra-modern irrigation

Concept: undefined - undefined
Chapter: [0.04] Water Testing
[1]1.iv

High volume sampler is a manual technique for collecting samples of particulate matter (PM). Ananya used this technique to measure the PM level at four different locations.

Which one of the following areas is likely to record the maximum level of particulate matter?

A shopping mall in Delhi.

A remote village.

The peak of a mountain.

A cement industrial area.

Concept: undefined - undefined
Chapter: [0.02] Monitoring the Atmosphere: Techniques
[2]1.v
[1]1.v.a

Study the relationship between the first and second words given below and fill in the fourth word on that basis.

Ex-situ : In-situ : : Cryopreservation : ______.

Concept: undefined - undefined
Chapter: [0.01] Population and Conservation Ecology
[1]1.v.b

Study the relationship between the first and second words given below and fill in the fourth word on that basis.

Pull factors : Immigration : : Push factors : ______.

Concept: undefined - undefined
Chapter: [0.01] Population and Conservation Ecology
[1]1.vi

Name the radical environmental advocacy group founded by Dave Foreman, Mike Rosella and Howie Wolke.

Concept: undefined - undefined
Chapter: [0.02] Deep Ecology (Gary Snyder, Earth First) Vs. Shallow Ecology
[1]1.vii

The practice of exporting hazardous wastes from developed countries to developing countries amounts to environmental injustice.

Name the International Treaty formulated to curb this practice.

Concept: undefined - undefined
Chapter: [0.02] A Critical Appraisal of Conventional Paradigm of Development from the Viewpoints of Sustainability, Environmental Impact and Equity
[2]1.viii
[1]1.viii.a

Write the expanded form of the following.

HYV

Concept: undefined - undefined
Chapter: [0.02] Food
[1]1.viii.b

Write the expanded form of the following.

TRIPS

Concept: undefined - undefined
Chapter: [0.03] International Trade
[4]1.ix
[1]1.ix.a

Write a term for the description given below.

A factual data of deaths in a population during a specific period.

Concept: undefined - undefined
Chapter: [0.02] Human Populations
[1]1.ix.b

Write a term for the description given below.

The permit that allows the holder to emit one tonne of carbon dioxide.

Concept: undefined - undefined
Chapter: [0.02] Monitoring the Atmosphere: Techniques
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[1]1.ix.c

Write a term for the description given below.

The maximum number of individuals that can be supported by an ecosystem without causing any damage to the environment.

Concept: undefined - undefined
Chapter: [0.05] Threats to the Ecosystem
[1]1.ix.d

Write a term for the description given below.

Government’s decision to restrict the international trade to protect and promote domestic business.

Concept: undefined - undefined
Chapter: [0.03] International Trade
SECTION B – 28 MARKS
[4]2
[4]2.i

Discuss the purpose of Environmental Economics.

Concept: undefined - undefined
Chapter: [0.02] A Critical Appraisal of Conventional Paradigm of Development from the Viewpoints of Sustainability, Environmental Impact and Equity
OR
[4]2.ii
[2]2.ii.a

What is natural resource accounting? 

Concept: undefined - undefined
Chapter: [0.01] Definition: Resources; Scarcity and Growth; Natural Resource Accounting
[2]2.ii.b

Explain any two advantages of natural resource accounting.

Concept: undefined - undefined
Chapter: [0.01] Definition: Resources; Scarcity and Growth; Natural Resource Accounting
[4]3
The thermometers used commonly in households are high risk sources of mercury which is a toxic soil pollutant. It can pose a serious health hazard if not disposed carefully. It should not be discarded carelessly but returned to the shopkeeper who should then return it to the manufacturer for its safe disposal or resource retrieval.

Under which environmental scheme is the shopkeeper responsible for the safe disposal? Explain.

Concept: undefined - undefined
Chapter: [0.05] Soil Testing
[4]4

State any four functions of the Central Pollution Control Board.

Concept: undefined - undefined
Chapter: [0.01] Pollution Monitoring
[4]5

A monkey and a butterfly inhabit the same area in a forest. Each follows a different life pattern for its survival.

  1. Identify the survival strategies followed by the two species mentioned above.    (1)
  2. In the event of a natural calamity, the monkey flees the forest and moves to a stable environment while the butterfly stays in the forest and struggles to survive. Account for the differences in their reactions to the natural calamity.    (3)
Concept: undefined - undefined
Chapter: [0.03] Stewardship of Land (E.G. Wendell Berry)
[4]6
[4]6.i

Why did Cuba switch to organic farming?

Concept: undefined - undefined
Chapter: [0.02] Food
OR
[4]6.ii

Water crisis can lead to social unrest and misery. Explain the statement with reference to Cochabamba.

Concept: undefined - undefined
Chapter: [0.04] Water Testing
[4]7

Explain any four ecological impacts of Transnational Companies.

Concept: undefined - undefined
Chapter: [0.03] Economic Status and Welfare (Net Economic Welfare, Nature Capital, Ecological Capital, Etc.)
[4]8

Farah bought a flat in a new housing society shown below. The builder told her that the housing society integrated the best practices of rural and urban living.

  1. Identify the emerging style of living shown above.
  2. Why is this style of living preferred to an ultra-modern way of living?
Concept: undefined - undefined
Chapter: [0.01] Modern Schools of Ecological Thought
SECTION C – 28 MARKS
[7]9
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[2]9.i

Read the following passage and answer the question given below.

Despite being a major food producer with extensive food security schemes and the largest public distribution system in the world, India still grapples with significant levels of food insecurity, hunger, and child malnutrition.

The Global Hunger Index (GHI), 2022, ranked India 107 among 121 countries.

How is the problem referred to in the passage linked to the Green Revolution?

Concept: undefined - undefined
Chapter: [0.01] Traditional Agriculture in India
[3]9.ii

Read the following passage and answer the question given below.

Despite being a major food producer with extensive food security schemes and the largest public distribution system in the world, India still grapples with significant levels of food insecurity, hunger, and child malnutrition.

The Global Hunger Index (GHI), 2022, ranked India 107 among 121 countries.

In the light of the above passage, discuss three major problems encountered in attaining food security.

Concept: undefined - undefined
Chapter: [0.02] Food
[2]9.iii

Read the following passage and answer the question given below.

Despite being a major food producer with extensive food security schemes and the largest public distribution system in the world, India still grapples with significant levels of food insecurity, hunger, and child malnutrition.

The Global Hunger Index (GHI), 2022, ranked India 107 among 121 countries.

Discuss two main features of the Food Security Law.

Concept: undefined - undefined
Chapter: [0.02] Food
[7]10
[7]10.i
[4]10.i.a

How did Gandhi’s advocacy of Khadi address the political, environmental and socio economic needs of Indian villages?

Concept: undefined - undefined
Chapter: [0.01] Traditional Agriculture in India
[3]10.i.b

Differentiate between tied aid and untied aid. Support your answer by giving one example for each.

Concept: undefined - undefined
Chapter: [0.07] Sustainable Development
OR
[7]10.ii
[4]10.ii.a

Given below are a few lines from a poem by Wendell Berry.

“Sowing the seed,
My hand is one with the Earth.
Having cared for the plants,
My mind is one with the air.
Eating the fruit,
My body is one with the earth.”

How do the lines given above bring forth Wendell Berry’s idea of conservation?

Concept: undefined - undefined
Chapter: [0.03] Stewardship of Land (E.G. Wendell Berry)
[3]10.ii.b

State any two advantages and any one disadvantage of Free Trade.

Concept: undefined - undefined
Chapter: [0.01] Trans-national Characteristics of Environmental Issues Using Case Study of Amazonia, Trade in Wild Life and Ozone Depletion
[7]11
[2]11.i

Mr. Saini owns an orchard. He is delighted to know that his new neighbour is a beekeeper.

In the light of externalities, specify the reason for Mr. Saini’s delight. Mention the term for the type of externality in the example mentioned above.

Concept: undefined - undefined
Chapter: [0.01] Traditional Agriculture in India
[5]11.ii

The tiger has been placed in its coffin. Nothing short of a miracle can save tigers in the wild in this country.

In the light of the above statement, examine the effectiveness of Project Tiger launched by the Government in 1972.

Concept: undefined - undefined
Chapter: [0.05] Threats to the Ecosystem
[7]12
[2]12.i

Read the conversation given below and answer the question that follow.

The next time you take printouts unnecessarily or you throw a paper in to the bin, think for a minute as to how many trees have been felled to manufacture it and how much wastewater generated in the process for something you use so often every day.

Can you take out some time from your everyday routine and devote it to starting a simple recycling program at your school or your neighbourhood? Not only you would save our planet from the torture of felling greenery, but you would also reduce generation and dumping of waste into the environment.

Besides waste generation, paper manufacturing industry also degrades the quality of air and water. Discuss any two points to establish the role of State Pollution Control Board in mitigating the problem.

Concept: undefined - undefined
Chapter: [0.01] Pollution Monitoring
[3]12.ii

Read the conversation given below and answer the question that follow.

The next time you take printouts unnecessarily or you throw a paper in to the bin, think for a minute as to how many trees have been felled to manufacture it and how much wastewater generated in the process for something you use so often every day.

Can you take out some time from your everyday routine and devote it to starting a simple recycling program at your school or your neighbourhood? Not only you would save our planet from the torture of felling greenery, but you would also reduce generation and dumping of waste into the environment.

Which three indicators of water quality should be checked? What is their significance if you want to recycle wastewater generated in the case above?

Concept: undefined - undefined
Chapter: [0.04] Water Testing
[2]12.iii

Read the conversation given below and answer the question that follow.

The next time you take printouts unnecessarily or you throw a paper in to the bin, think for a minute as to how many trees have been felled to manufacture it and how much wastewater generated in the process for something you use so often every day.

Can you take out some time from your everyday routine and devote it to starting a simple recycling program at your school or your neighbourhood? Not only you would save our planet from the torture of felling greenery, but you would also reduce generation and dumping of waste into the environment.

DEWATS (Decentralised Waste Water Treatment System) is a simple and cost effective method of recycling water. Explain the statement.

Concept: undefined - undefined
Chapter: [0.04] Water Testing

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