UPSC Civil Service Prelims Paper I 2025 (General Studies)

MCQ (Single Correct Answer)

-0.66

Consider the following statements:

Statement I: Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries.

Statement II: Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals.

Statement III: Activated carbon can be easily synthesized from environmental wastes with high carbon content.

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

Both Statement II and Statement III are correct and both of them explain Statement I

Both Statement II and Statement III are correct but only one of them explains Statement I

Only one of the Statements II and III is correct and that explains Statement I

Neither Statement II nor Statement III is correct

UPSC Civil Service Prelims Paper I 2024 (General Studies)

MCQ (Single Correct Answer)

-0.66

Consider the following:

Pyroclastic debris
Ash and dust
Nitrogen compounds
Sulphur compounds

How many of the above are products of volcanic eruptions?

Only one

Only two

Only three

All four

UPSC Civil Service Prelims Paper I 2021 (General Studies)

MCQ (Single Correct Answer)

-0.66

‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

Food preservatives

Fruit-ripening substances

Reused plastic. containers

Toiletries

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