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PPSC Past Paper 2025 (Junior Clerk Evening)
PPSC · 2025 · Practice with instant answers and explanations
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100 Past Paper MCQs
Question 42 of 100
42%
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00:00
Question
42
Past Paper
PPSC
Which gas damages the ozone layer?
A
Nitrogen
B
Ozone
C
CFCs
D
Carbon dioxide
Correct Answer:
Option C — CFCs
Explanation:
Chlorofluorocarbons release chlorine radicals that destroy stratospheric ozone.
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