(Papers) CISCE : Download Class X Exam Papers-2018 (ENVIRONMENTAL SCIENCE)

ENVIRONMENTAL SCIENCE :

• Subject : ENVIRONMENTAL SCIENCE
• Year : 2018
• Duration : 2 Hour

Instruction :

• Answers to this Paper must be written on the 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 

Question 1
(a) What is biogas? State any one advantage of using biogas. [2]
(b) Give the full form of CITES. [2]
(c) Define silviculture. [2]
(d) How is waste water useful to mankind? [2]
(e) List any two factors responsible for population growth. [2]
Question 2
(a) What is vermiculture? State any one benefit of vermiculture to a farmer. [2]
(b) Give one advantage and one disadvantage of using sewage sludge in agriculture.[2]
(c) Mention any two man made factors that have led to loss of biodiversity. [2]
(d) How does GEF complement the Montreal Protocol? [2]
(e) Name the Multi National Corporation that was responsible for the Bhopal Gas Tragedy. Name the gas that was leaked.[2]

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