Morning Star solutions for टोटल जियोग्राफी [इंग्रजी] इयत्ता ९ आयसीएसई chapter 17 - Sources of Pollution [Latest edition]

Direct sources of pollutants that are easy to identify, monitor and control:

Which amongst the following is not a source of Noise Pollution?

Ozone, ketones and sulphur oxides are examples of ______.

Suspended droplets, solid particles or mixtures of both, in air are called ______.

Which amongst the following is NOT a source of Air Pollution?

Motor vehicles fuel, burning of wood, coal and solid waste disposal are major sources of which pollutant?

Rapid growth of algae when phosphates are discharged into waterways.

Assertion (A): The rapidly increasing number of vehicles on the roads is a big source of noise pollution.

Reason (R): Increasing traffic jams in congested areas lead to repeated hooting of horns by impatient drivers causing noise pollution.

Assertion (A): Noise from construction sites is generally far worse than noise originating from factories.

Reason (R): Construction itself causes high noise emissions and the equipment used is inherently noisy.

Which amongst the following is not a source of Radioactive Pollution?

Construction sites are source of which pollution?

Assertion (A): The excessive use of chemical fertilisers creates pollution.

Reason (R): The fertilisers are used to enrich the soil.

Given below are scenes, list the main pollutants for each and identify which type of pollution each causes. Give reasons to support your answers.

Name any three air pollutants and the sources of each of them.

What are natural sources of air pollution?

Name one industry which pollutes the atmosphere with gaseous as well as with particulate matter.

What is known as smog?

What harm is done by smog especially in winter?

Name three gases emitted during burning of garbage.

Mention any two sources of water pollution.

Name two heavy metals from industries that pollute water.

Mention any two sources of soil pollution.

Why are radioactive pollutants very dangerous?

In cities flyovers are constructed with large sheets of fibre glass on the outer side of the flyovers. Give reason.

How does lighting of crackers cause pollution?

With reference to noise pollution, answer the following:

When does sound become a source of noise pollution?

With reference to noise pollution, answer the following:

How does traffic contribute to noise pollution?

With reference to noise pollution, answer the following:

Why are the construction sites considered as worse than factories in their contribution to noise pollution?

With reference to noise pollution, answer the following:

How do the airplanes cause noise pollution?

With reference to noise pollution, answer the following:

Why is there more noise pollution during landing as compared to during take-off?

Air pollution is the contamination of air by pollutants. In this context answer the following:

Based on their origin, how can air pollutants be classified?

Air pollution is the contamination of air by pollutants. In this context answer the following:

How does the use of automobiles cause air pollution?

Air pollution is the contamination of air by pollutants. In this context answer the following:

How do industries pollute the air?

Name any three air pollutants and the sources of each of them.

With reference to the sources of water pollutants answer the following question:

What are the domestic sources of water pollution?

With reference to the sources of water pollutants answer the following question:

Why is it harmful to dispose of household detergents in water bodies?

With reference to the sources of water pollutants answer the following question:

In what way does the industrial waste pollute water?

With reference to the sources of water pollutants answer the following question:

What are the sources of radioactive pollution? Describe each of them.

Of all the different types of pollution, noise pollution is the most subtle but with many harmful effects. Do you agree with this statement? Give reasons to support your answer.

Pollution in the cities is the price of growing affluence. Give your views on the above statement with examples.

Find out the percentage of pollutants released into the air by automobiles in your city. Do you think introduction of (a) CNG and (b) electric vehicles in some of the cities has been helpful in reducing pollution levels?