Download App

Air and Atmosphere — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAir and Atmosphere2 Marks
Question
What are the causes of air pollution ?
✓

Answer

1.When fuels bum they produce sulphur dioxide, sulphur trioxide, nitrogen dioxide, hydrogen sulphide when these gases mix with rain water.
2. They produce sulphuric and nitric acid. These acids mix with rain water to form acid rain and also caused by the industries and automobiles.

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

Write balanced chemical equation :
An aqueous calcium hydroxide solution (lime water) reacts with carbon dioxide gas to produce calcium carbonate and water.
→
complete chemical equation balance them : $\text{H}_2 +$ _________ $\rightarrow \text{HCl}$
→
On the basis of molecular theory, explain why a liquid can flow and it needs a vessel to contain.
→
What is a chemical equation ?
→
Define physical change. Give two examples for the above changes.
→
Classify the following changes as physical or chemical.
→
What are the different types of mixtures ?
→
Write one of the reaction for each of the following characteristics :Change of smell
→
Define: Gas.
→
Define the terms : pH scale
→