Write about the contribution of Ahmed Khan to reduce the amount o

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 Multiple Choice QuestionsLong Answer Type

71. What measures, as an individual, you would take to reduce environmental pollution ?
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72. Discuss briefly the following :

(a) Radioactive wastes.

(b) Defunct ships and e-wastes.

(c) Municipal solid wastes.

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73. What initiatives were taken for reducing vehicular air pollution in Delhi ? Has the air quality improved in Delhi ?
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 Multiple Choice QuestionsShort Answer Type

74. Discuss briefly the following :

(a) Greenhouse gases.

(b) Catalytic converter

(c) Ultraviolet B

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75. Why is ozone layer in stratosphere called a protective layer ? Write a short note on the causes and effects of ozone depletion.
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 Multiple Choice QuestionsLong Answer Type

76. What is deforestation ? List the causes of deforestation.
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 Multiple Choice QuestionsShort Answer Type

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77. Write about the contribution of Ahmed Khan to reduce the amount of plastic waste.


Ahmed Khan a plastic sack manufacturer of Bangalore, found an ideal solution to the problem of increasing plastic waste. His company developed Polyblend, a fine powder of recycled modified plastic. The raw material for creating Polyblend was any plastic film waste. The polyblend mixture was mixed with the bitumen and was used to lay roads. In collaboration with R.V.College of Engineering and the Bangalore City Corporation, Ahmed Khan proved that blends of Polyblend and bitumen, when used to lay roads, enhanced the bitumen’s water repellant properties, and helped to increase road life by a factor of three. Using Khan’s technique, by the year 2002, more than 40 kms of road in Bangalore has already been laid. Thus decresing the amount of plastic waste to a great extent.
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 Multiple Choice QuestionsLong Answer Type

78. Write in brief about Montreal Protocol.
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79.

List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?

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 Multiple Choice QuestionsMatch The Following

80.

Match the following

A. Catalytic converter (i) Particulate matter
B. Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides
C. Earmuffs (iii) High noise level
D. Earmuffs (iv) Solid wastes
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