Environment & Ecology

Environmental Impact Assessment

Environment & Ecology·Prelims Strategy

Environmental Clearance — Prelims Strategy

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Version 1Updated 9 Mar 2026

Prelims Strategy

For Prelims, focus on the factual accuracy and key distinctions related to Environmental Clearance. Memorize the parent legislation (Environment (Protection) Act, 1986) and the primary notification (EIA Notification, 2006).

Understand the classification of projects into Category A and Category B, and their respective approving authorities (MoEFCC/EAC vs. SEIAA/SEAC). Be clear on the four stages of the EC process: Screening, Scoping, Public Consultation, and Appraisal, and which stage applies to which category.

Pay attention to the constitutional provisions (Article 48A, 51A(g)) that underpin environmental protection. Note the typical validity periods for different project types. Also, be aware of landmark judgments (e.

g., Goa Foundation case on post-facto EC) and recent significant amendments or guidelines. Practice MCQs that test your understanding of roles of various bodies (CPCB, SPCB, NGT) and their specific functions in the EC ecosystem.

Differentiate between EC and other clearances like Forest Clearance. A strong grasp of these core facts and their interrelationships will be crucial for scoring well in Prelims.

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