Chemistry X (Sindh Board) — Chapter 5: Environmental Chemistry I – The Atmosphere

Chapter 5 · Environmental Chemistry I – The Atmosphere

15 randomly selected questions from a bank of 60 · one attempt · 15 minutes on the clock.

Composition of the atmosphere — nitrogen, oxygen, argon, carbon dioxide, and other gases
The five layers of the atmosphere, with a detailed comparison of the troposphere and stratosphere
Pollutants — their types, and the difference between primary and secondary air pollutants
Major air pollutants (carbon monoxide, nitrogen oxides, sulfur dioxide, ozone, particulate matter, lead) — their sources, environmental risks, and human health risks
Acid rain — its formation and its effects on soil, water, structures, and living things
Ozone formation and depletion — the role of CFCs, the ozone hole, and its effects
The greenhouse effect and global warming — causes and effects

⏱ 15 min timer

❓ 15 questions

✅ Pass mark 40%

🔀 Questions & options randomized

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#	Name	Class	Roll/GR#	Correct	%	Status	Date