Quiz: UPPSC Prelims 2014 (GS Paper I)
Category: UP PSC (PCS)
Question 75 of 150
UPPSC Prelims 2014 (GS Paper I)
50%
Which one of the following is not a secondary pollutant ?
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23 Aug 2025
ยท
18 Oct 2025
This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2014 (GS Paper I)