ISC 2026 Environmental Science Improvement Examination Question Paper for Class 12

About this paper

This is the ISC Class 12 Environmental Science paper (code 877) set by CISCE for the 2026 Improvement Examination. It carries 70 marks, runs for three hours plus fifteen minutes of reading time, and has twelve compulsory questions in three sections. Section A has fourteen one-mark items, including multiple-choice, assertion–reason, analogies, expanded forms and define-the-term questions. Section B has seven four-mark short answers and Section C four seven-mark long answers, with internal choices in two Section B questions and one Section C question. Cases and quotations include the Bhopal gas tragedy, an NGO petition on city air quality, a farmer using ducks against pests, TRIPS and Covid-19 vaccines, Jane Goodall, M. S. Swaminathan and a passage on plastic waste. This copy has the questions only.

Exam

ISC Class 12

Subject

Environmental Science

Year

2026

Paper code

877

Maximum marks

70

Time allowed

3 hours + 15 min reading

Questions

12

Pages

8

Answers included

No, questions only

Paper pattern

• Section A

  14 marks

  Question 1: 14 one-mark subparts – multiple-choice, assertion–reason, analogies, naming, expanded forms and terms

• Section B

  28 marks

  Questions 2–8, short answers of four marks each; internal choice in two questions

• Section C

  28 marks

  Questions 9–12, long answers of seven marks each; internal choice in one question

Topics covered

• Natural resources and sustainable development principles
• Ecosystem services and biodiversity conservation
• Air pollution and ambient air sampling
• Sustainable agriculture and pest control
• Free trade, WTO and TRIPS
• GNP and environmental economics
• Quality marks and food additives
• Food security and marketing
• Transnational companies and the environment
• Ecological thinkers and social forestry
• Plastic waste and extended producer responsibility

Questions from this paper

1. Discuss any four steps that can be taken to reduce vehicular pollution in a city.
2. Discuss any four advantages of the ex-situ conservation method.
3. Discuss the issue of water management in Cochabamba and the civil unrest caused by it.
4. Provide any two reasons for the transformation of GATT into WTO.
5. Classify and explain any three types of social forestry.
6. Explain the role of Extended Producer Responsibility (EPR) in addressing the growing problem of plastic waste.