ENVIRONMENTAL SCIENCE

 

(Two hour)

 

Answers to this Paper must he written on (he paper provided separately.

You will not be allowed to write during the first 15 minutes.

This time is to be spent in reading the question Paper.

The time given at the head of this paper is the time allowed for writing the answers.

 

Attempt all questions from Section A and any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ].

 

SECTION-A (40 MARKS)

 

(Attempt all questions from this Section)

 

Question 1.

(a) State any two objectives of biosphere reserves.  [2]

(b) Mention two initiatives that can be taken to reduce damage to the TaJ Mahal. [2]

(c) Expand CNG. State any one disadvantage of using this fuel. [2]

(d) State two reasons for the development of mutual cooperation between developed  and developing countries. [2]

(e) What is fiyash ? [2]

Question 2.

(a) Mention any two man-made factors that lead to the loss of biodiversity.  [2]

(b) List two environmental risks of using High Yielding Varieties (HYV) of seeds in agriculture.[2]

(c)   Mention any two causes of land degradation.[2]

(d)   State any two advantages of conservation tillage.[2]

(e)   Mention any two ways by which Non-Governmental Organisations (NGOs) can help conserve the environment.[2]

Question 3.

(a)   Mention any two effects of imposing penalties on industries. [2]

(b)   Give any two advantages of developing community forestry.[2]

(c)   Define rare species and endangered species. [2]

(d)   What is vermiculture? State any one advantage of vermiculture [2]

e) What is a four stroke engine? Mention any one advantage of four stroke engines.  [2]

Question 4.

(a) What are bioferUlizers? Given any one example.   [2]

(b) Mention any two measures that can be taken to prevent disasters like the Bhopal  Gas Tragedy. [2]

(c)   What is food aid? [2]

(d)   With the help of an example, explain the term non biodegradable waste. [2]

(e)   What is integrated pest management? [2]

SECTION B (40 MARKS)

 (Answer any FOUR questions from this Section)

Question 5.

 (a) Explain any five consequences of uncontrolled population growth on the   environment.  [5]

(b) Describe any five strategies that make agriculture sustainable.  [5]

Question 6.

(a) Describe anyfive ways by which trade and aid can reduce inequalities between  nations.  [5]

(b) Write briefly on the impact of particulates on the environment. [5]

Question 7.

(a) The development of India is in the development of its villages. Describe anyfive  ways of developing rural areas.        [5]

(b) Describe any five ways of reducing air pollution from domestic sources. [5]

Question 8.

(a) Discuss any five ways of combating deforestation. [5]

(b) Describe anyfive conservation strategies for saving the biodiversity. [5]

Question 9.

(a) Explain anyfive reasons for conserving energy.  [5]

(b) What is ex s/tu conservation? Discuss any four advantages of ex s/tu conservation. [5]

Question 10.

(a) Some co~ritries have excess food while some face a scarcity. Explain any two causes of such food imbalance. Discuss any three measures that can be taken to remove such imbalance. [5]

(b) Discuss any five ways by which Multinational Companies (MNCs) cause environmental degradation in developing countries. [5]

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