What educational qualification is required for CPCB Scientist-B?

Candidates must hold an M.Sc. degree in Environmental Science, Chemistry, Life Sciences, or Botany/Zoology with at least 55% marks from a recognized university. Alternatively, a B.E. or B.Tech in Environmental Engineering with the same minimum percentage is also acceptable. The upper age limit is generally 30 years, with relaxations applicable for SC/ST/OBC and other reserved categories as per Government of India norms.

What does the CPCB do and why is the Scientist-B role important?

The Central Pollution Control Board (CPCB) is a statutory body under the Environment Protection Act 1986, responsible for promoting environmental health and preventing pollution across India. It issues Consent to Establish and Consent to Operate licenses to industries under the Water Act 1974 and Air Act 1981. CPCB monitors 17 critically polluted industrial clusters across the country and provides technical guidance to State Pollution Control Boards. Scientist-B officers conduct field surveys, analyze pollution data, and enforce environmental standards, making the role central to India's environmental governance.

How is the CPCB Scientist-B exam conducted?

The exam is conducted as an Online Computer-Based Test (CBT) with 100 multiple-choice questions. The total duration is 120 minutes with a maximum score of 100 marks. There is negative marking of 0.25 marks for every incorrect answer. Shortlisted candidates are subsequently called for a personal interview before final selection. The entire recruitment process is managed by CPCB and may be notified through its official website or routed via UPSC/Staff Selection Commission depending on the vacancy.

What are the key environmental laws tested in the CPCB Scientist-B exam?

The exam primarily tests knowledge of the Environment Protection Act 1986, which is the umbrella legislation for environmental protection in India. Candidates must also study the Water (Prevention and Control of Pollution) Act 1974, the Air (Prevention and Control of Pollution) Act 1981, the EIA Notification 2006 (which mandates Environmental Impact Assessment for 39 categories of projects), and the Hazardous Waste Management Rules. Familiarity with National Ambient Air Quality Standards (NAAQS), effluent standards, and CPCB's Annual Report data is strongly recommended.

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100

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120 min

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100

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Exam Overview

Conducting BodyCentral Pollution Control Board

Exam ModeOnline CBT

Marking Scheme1 mark per correct answer, 0.25 negative marking

SectionsEnvironmental Science, Chemistry, General Studies, Reasoning

FrequencyAs per vacancy notification

Next Exam2026-09-15

Registration2026-07-01

EligibilityM.Sc. in Environmental Science / Chemistry / Life Sciences or B.E./B.Tech in Environmental Engineering with minimum 55% marks. Age limit 30 years (relaxable for reserved categories).

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CPCB Scientist-B Preparation Tips

Expert strategies to help you crack CPCB Scientist-B on your first attempt.

Thoroughly study the Environment Protection Act 1986, Water Act 1974, Air Act 1981, and EIA Notification 2006 — these are heavily tested in every CPCB exam.

Practice CPCB and State PCB previous year papers; focus on pollution monitoring techniques, effluent standards, and treatment technologies.

Strengthen your understanding of analytical chemistry, including spectrophotometry and chromatography used in pollution analysis.

Stay updated on CPCB annual reports, the list of 17 critically polluted industrial clusters, and India's commitments under international conventions like Basel, Rotterdam, and Stockholm.

Frequently Asked Questions

Common questions about CPCB Scientist-B exam pattern, eligibility, and preparation.

The CPCB Scientist-B exam covers Environmental Science including pollution monitoring, Environmental Chemistry, General Studies covering the Environment Protection Act 1986, Water (Prevention and Control of Pollution) Act 1974, Air (Prevention and Control of Pollution) Act 1981, and Logical Reasoning. Candidates should also study EIA Notification 2006 and CPCB's role in monitoring 17 critically polluted industrial clusters. The paper consists of 100 objective-type questions to be solved in 120 minutes with negative marking of 0.25 per wrong answer.

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