Air Pollution
Trending Questions
Why is rusting of iron objects faster in the rainy season than in summer season?
Content of moisture in summer season is high whereas air is dry in rainy season.
Content of moisture in air is low in rainy season whereas air is almost dry in summer season.
Content of moisture in air is high in rainy season whereas air is almost dry in summer season.
Rusting does not happen in the rainy season at all.
The mixing of harmful substances in the air is called _______
Explain the differences between pure air and polluted air.
- Forest fire
- Volcanic activity
- Industrial gases
- Dust storms
The calorific values of petrol and CNG are 45000 kJ/kg and 50, 000 kJ/kg, respectively. If you have a vehicle which can run on petrol as well as CNG, which fuel will you prefer and why?
- air
- moisture
- presence of nitrogen
- exposed surface of iron
Explain why rusting of iron objects is faster in coastal areas than in deserts.
- Separators
- All of the above
- Electrostatic precipitators
- Baghouse filters and scrubbers
Rusting of iron nails is faster in coastal areas than in deserts. Do you agree? If yes, explain it briefly. [3 MARKS]
People wear masks so that they can protect themselves from inhaling polluted air.
- True
- False
What are the conditions which lead to the rusting of iron?
Interaction with air
Interaction with water
Interaction with soil
Coating iron with paint
Discuss Rusting in brief.
- Sulphur oxides
- Nitrogen oxides
- Water vapour
- Both sulphur oxide and nitrogen oxide
- Destruction of monuments
- Spoilage of soil
- Spoilage of water bodies
- All of the above
Question 7.
What is sludge? Explain how it is treated?
Oxygen
Question 7.
What is sludge? Explain how it is treated?
What is the best method to avoid pollution, if you are using plastic bags?
Use biodegradable plastic bags
Throw the plastic bags into the river
Burn the plastic bags in a rubbish dump
Bury the plastic bags in the soil