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[A] : Suspended particulate matter (SPM)...

[A] : Suspended particulate matter (SPM) is an important pollutant released by diesel vehicles .
[R] : Catalytic converters greatly reduce pollution caused by automobiles .

A

If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.

B

If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason if False.

D

If both Assertion `&` Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
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Explore conceptually related problems

Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : Catalytic convertes greatly reduce pollution caused by automobiles.

How do automobiles filled with catalytic converters reduce air pollution ? Suggest the best fuel for such vehicles.

With its very large population of vehicular traffic, Delhi is one of the most polluted cities of the world. Which of the following steps were taken by the government to reduce vehicular pollution in Delhi ? (i) Switching over the entire fleet of public transport i.e., buses, autorickshaws, from diesel to CNG (ii) Phasing out of old vehicles (iii) Use of unleaded petrol in vehicles (iv) Use of low sulphur petrol and diesel in vehicles (v) Use of catalytic converters in vehicles (vi) Application of stringent pollution level norms for vehicles such as Euro-II norms, etc.

Use of lead- free petrol or diesel is recommended to reduce the pollutant emitted by automobiles. What role does lead play?

Read the following statements regarding particulate matter and select the incoorect ones. (i) Particulate matter (PM) consists of shoot, flyash, dust, spores, pollen grains, etc. (ii) Particulate matter is differentiated into settleable (larger than 10 mu m , remaining in air for less than one day) and suspended (less than 10 mu m remaining in air for more than one day to several weeks ) particulate matter. (iii) SPM (Suspended particulate matter ) consists of aerosol, dust and mist. (iv) Particulate matter causes respiratory diseases such as tuberculosis, allergy and many more diseases in animals and plants. (v) According to Central Pollution Control Board (CPCB), particulate size of 2.5 mu m or less in diameter are responsible for causing the greatest harm to human health.

Read the following statements carefully. (i) An electrostatic precipitator removes particulate matter by imposing negative charge on them. (ii) Catalytic converters convert unburnt hydrocarbons into CO_(2) and water. (iii) Peroxyacyl nitrates (PAN) is a secondary pollutant. (iv) DDT is a non-biodegradable pollutant. Which of the above statements are incorrect ?

Observe the diagram of the catalytic converter and answer the questions which follow: (a) Name any two metals used as catalyst in the catalytic converter. (b) Name the gases that are released after passing the exhaust hydrocarbons through the catalytic converter. (c) Name the other poisonous gas which is missing (?) in the exhaust pollutant of an automobile in the above diagram?

Consider the following statements with respect to pollution. A. To control air pollution problems, by the end of 2002 all the buses of Delhi were converted to run on unrelated petrol B. Electrostatic precipitator can remove over 99% particulated matter present in the exhaust from a thermal power plant. C. It is possible to estimate the amount of organic matterin sewage water by measuring BOD. Of the above statements:

How many of the following statements regarding thermal pollution are INCORRECT ? a. Heated wastewaters flowing out of electricity-generating units , e.g., thermal power plants , constituent an important category of pollutants. b. Thermal wastewater eliminates or reduces the number of orgenisms sensitive to high temperatures. c. It may enhance the growth of plants and fish in extremely cold areas but. Only after causing damage to the indigenous flora and fauna. d. Thermal wastewater increases the number of orgenisms sensitive to high temperatures.

Which of the following statements are correct ? (i) Catalytic converters convert unburnt hydrocarbons into CO_(2) and H_(2)O . (ii) The catalytic converter converts carbon monoxide and nitric oxide into CO_(2) and N_(2) . (iii) Automobiles are the major cause of atmospheric pollution in the world. (iv) Proper maintenance of automobiles along with the use of lead-free petrol or diesel cannot reduce the pollutants they emit. (v) In India, the Air (Prevention and Control of Pollution) Act came into force in 1981 amended in 1987 to include noise as air pollutants.

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