Download App

Air and Atmosphere — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAir and Atmosphere2 Marks
Question
State and explain two ways by which air gets polluted in nature.
✓

Answer

Air gets polluted in nature by following ways :
  • During forest fire, a large amount of carbon particles (smoke) and carbon-monoxide pollute the air.
  • When volcanoes erupt, a huge amount of ash and sulphur-dioxide is added in the air as pollutants.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[2 Mark Question Answer]" from Air and Atmosphere→Air and Atmosphere — all question types→CHEMISTRY STD 7 question papers→ICSE Board STD 7 question papers→ICSE Board question paper generator→

Similar questions

Differentiate between the following.
Atoms and Molecules .
→
Write one of the reaction for each of the following characteristics :Change of state
→
What do you understand by a liquid ?
→
When blue litmus is introduced into a jar containing carbon dioxide
→
An element $X$ has the valency $3$ while element $Y$ has the valency $2.$ Write the formula of the compound formed between $X$ an $Y.$
→
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
→
Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning sulphur
→
What are the causes of air pollution ?
→
Write one of the reaction for each of the following characteristics :Evolution of gas
→
What are metalloids?
→