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Environmental Issues

Short Answer Type

51. Write a note on working of electrostatic precipitator.

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52. How does a scrubber function ?

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53. Differentiate primary air pollutants and secondary air pollutants.

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54. What is photochemical smog ? How does smog affect biological world ?

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55. What is acid rain ? What are its effects on plants ?

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Long Answer Type

56. What measures do you suggest to control pollution from automobile exhaust ?

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Short Answer Type

57. Briefly explain noise pollution.

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Long Answer Type

58. List various measures for control of noise pollution.

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Short Answer Type

59. What is water pollution ?

Water pollution. Addition of harmful materials to water is termed water pollution. The sources of water pollution are community waste water (sewage) and wastes from industries and agricultural practices. Water pollutants include organic matter, pathogens, chemicals and minerals, solid particles, radioactive wastes and heat.

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60.

Make a chart illustrating the kinds of water pollutants.

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