Important Questions with Answers for CBSE Class 12 Economics Chapter 9 Environment and Sustainable Development, which is outlined by expert Economics teachers from the latest version of CBSE (NCERT) books.
CBSE Class 12 Economic Chapter-9 Important Questions
Question 1
What is the factor that contributes to global warming?
(a) Deforestation
(b) A decrease in cattle production
(c) Burning of petroleum and coal products
(d) Hydrogen gas released in animal waste
Answer:
(c) Burning of petroleum and coal products
Question 2
Ozone depletion refers to the phenomenon of reduction in the amount of ozone in the?
(a) Exosphere
(b) Stratosphere
(c) Troposphere
(d) Mesosphere
Answer:
(b) Stratosphere
Question 3
What is the environment?
Answer:
Environment is described as the total surroundings of a living organism, natural forces and totality of all resources.
Question 4
Define Renewable resources?
Answer:
Renewable resources refers to that type of resources that can be utilized without being exhausted. Such as trees, fishes, etc.
Question 5
Define Non-renewable resources.
Answer:
Non-Renewable resources are those resources which get exhausted with extraction. Such as coal, fuel, etc.
Question 6
The problem of ozone depletion is caused by the presence of high levels of these compounds in the stratosphere. Name them.
(a) Chlorine and Bromine
(b) Chlorine and Carbon
(c) Silicon and Bromine
(d) Silicon and Hydrogen
Answer:
(a) Chlorine and Bromine
Question 7
What is the full form of CFG?
(a) Chlorofluorocarbons
(b) Hydrofluorocarbons
(c) Ultra Fluorocarbons
(d) Photo Fluorocarbons
Answer:
(a) Chlorofluorocarbons
Question 8
Why do some of the resources become extinct?
Answer:
Some of the resources have gone extinct because their extraction has gone above and beyond the rate of generation.
Question 9
What is Global Warming?
Answer:
Global warming is an increase in the average temperature of the earth’s lower atmosphere and ocean.
Question 10
What is the example of overuse of environmental resources?
(a) Land Degradation & Deforestation
(b) Land Up gradation & Reforestation
(c) None
(d) Both
Answer:
(a) Land Degradation & Deforestation
Question 11
The Deccan Plateau black soil is particularly suitable for the cultivation of?
(a) Jute
(b) Maize
(c) Textile
(d) Cotton
Answer:
(d) Cotton
Question 12
The Chipko Movement, for protection of the forest, was started in which part of India?
(a) Kerala
(b) Uttarakhand
(c) Karnataka
(d) Maharashtra
Answer:
(b) Uttarakhand
Question 13
Name the factor responsible for land degradation
(a) Shifting Cultivation
(b) A gain of vegetation occurring due to deforestation
(c) Improper crop rotation
(d) Unsustainable fuelwood and fodder extraction
Answer:
(b) A gain of vegetation occurring due to deforestation
Question 14
Give two examples of resources overuse.
Answer:
The two examples of resources overuse are:
- Excessive tree demolishing
- Excessive exploitation of fossil fuel
Question 15
Give two examples of misuse of resources.
Answer:
The two examples of misuse of resources are:
- Use of river to absorb industrial effluents
- Use of wood as household fuel
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