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UPSC Prelims 2025 Paper-I 📅 25 May, 2025

Consider the following statements:
Statement I: Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon emissions.
Statement II: Silica-bearing clay is mixed with limestone while manufacturing cement.
Statement III: Limestone is converted into lime during clinker production for cement manufacturing.

Which one of the following is correct in respect of the above statements?

A
Both Statement II and Statement III are correct and both of them explain Statement I
B
Both Statement II and Statement III are correct but only one of them explains Statement I
C
Only one of the Statements II and III is correct and that explains Statement I
D
Neither Statement II nor Statement III is correct
Result Summary
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UPSC Prelims
2025 • 25 May, 2025 • Paper-I
Consider the following statements:
Statement I: Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon emissions.
Statement II: Silica-bearing clay is mixed with limestone while manufacturing cement.
Statement III: Limestone is converted into lime during clinker production for cement manufacturing.

Which one of the following is correct in respect of the above statements?
Correct Answer
Both Statement II and Statement III are correct but only one of them explains Statement I
Both Statements II and III are factually correct. However, only Statement III explains Statement I. The massive CO2 emission from the cement industry is primari......
Ref/Book : UPSC Prelims 2025
Ref. Subject Environment
Chapter -
Ref. Topic Climate Change
Pg. No -
💡 Analysis & Explanation
Introduction ▼
Both Statements II and III are factually correct. However, only Statement III explains Statement I. The massive CO2 emission from the cement industry is primarily due to the chemical process of calcination (converting limestone to lime), not merely the mixing of clay.
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