General Science & Healthcare•Updated for 2026 Competitive Exams
Most Important MCQS on Environmental Science 2023
Practice top multiple choice questions (MCQs), topic summary, and verified answers for Most Important MCQS on Environmental Science 2023. Essential for Central & State competitive examinations. Solve these high-frequency practice questions with step-by-step solutions to evaluate your preparation level.
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Practice Questions & Explanations (10 Questions)
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Q1UPSC / State PSCMedium
Which gas is most responsible for global warming and the greenhouse effect?
Q2UPSC / State PSCMedium
Ozone layer depletion is primarily caused by which chemical compounds?
Q3UPSC / State PSCMedium
The Montreal Protocol is an international treaty designed to protect:
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Q4UPSC / State PSCMedium
Acid rain is caused by the emissions of which gases into the atmosphere?
Q5UPSC / State PSCMedium
Which day is celebrated globally as World Environment Day?
Q6UPSC / State PSCMedium
The phenomenon where a build-up of toxic substances occurs in an individual organism over its lifetime is called:
Q7UPSC / State PSCMedium
Which of the following is a non-renewable source of energy?
Q8UPSC / State PSCMedium
The term 'Biodiversity' refers to:
Q9UPSC / State PSCMedium
Which international agreement aimed to reduce greenhouse gas emissions, adopted in 1997?
Q10UPSC / State PSCMedium
The 'Chipko Movement', which started in the 1970s in India, was primarily aimed at:
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