Introduction to Environmental Issues

Q. UV radiation of wavelengths shorter than UV-B is almost completely absorbed by Earth’s atmosphere, given that the ozone layer is intact. But, UV-B damages DNA, and mutation may occur. It causes

1. Various types of skin cancers
2. Damage to skin cells
3. Ageing of the skin
4. All of the above

Q. The ozone hole over Antarctica develops each year between

1. Late August and late October
2. Late August and early October
3. Early August and late October
4. Early August and early October
   

Q. In domestic sewage, suspended solids, colloidal and dissolved materials constitute

1. 1%
2. 10%
3. 99%
4. 0.1%

Q. Non-ionising radiation with specific biological effects are

1. UV radiations
2. Gamma rays
3. X-rays
   
4. Beta rays
   

Q. What are environmental issues?

1. Harmful effects of human activity on the environment
2. Study that deals with recycling scrap and reprocessing the material into useful products
3. Natural calamities likeearthquakes and volcanic eruptions
4. All of these
5. None of these

Q. Consider the following statements regarding Environment (Protection) Act.
Statement I: Act empowers State Governments to protect and improve the quality of our environment.
Statement II: It was enacted in 1986.

1. Only Statement II is correct.
2. Both Statement I and Statement I are wrong.
3. Both Statement I and Statement I are correct.
4. Only Statement I is correct.

Q. In coming years, skin related disorders will become more common due to

1. Air pollution
2. Excessive use of detergents
   
3. Water pollution
4. Depletion of ozone layer
   

Q. Which of the following city was ranked 4th out of the 41 most polluted cities of the world, in the 1990s?

1. Kolkata
2. Ahmedabad
3. Mumbai
4. Delhi

Q. Result of ozone hole is

1. UV radiations reach the Earth
2. Global warming
3. Acid rain
4. Greenhouse effect

Q. Ozone day is

1. September, 16
2. April, 21
3. December, 25
4. January, 30

Q. UV radiations bring about

Q. Increasing skin cancer and high mutation rate are due to

1. $C{O}_2$ pollution
2. Acid rain
3. Ozone depletion
4. $CO$ pollution

Q.

why do hunters hunt animals

Q. The zone of atmosphere in which the ozone layer is present is called

Q. Human activities that lead to environmental degradation are

1. Burning of fossil fuels
2. Tools for hunting
3. Extensive agriculture
4. All of the above

Q. Long answer question:
What is poaching ? Explain why animals are poached?

Q. Which of the following is NOT a product of commercial hunting?

1. Ivory for piano keys
2. Shells for ornamentation
3. Deer skin to keep hunters warm
4. Feathers for fan

Q. What are environmental issues?

1. Harmful effects of human activity on the environment
2. Study that deals with recycling scrap and reprocessing the material into useful products
3. Natural calamities like earthquakes and volcanic eruptions
4. All of these
5. None of these

Q. We should address environmental issues to reduce

1. Species extinction
2. Deforestation
3. Biomagnification
4. All of the above

Q. Which of the following is a weightless pollutant ?

1. Sewage and exhaust emissions
2. SO2 and NO2
3. Photochemical smog
4. Heat, sound and radioactive wastes

Q. Major drawback of DDT as a pesticide is that

1. Organisms at once develop resistance to it.
2. It is significantly less effective than other pesticides.
3. It's cost of production is high.
4. It is not easily and rapidly degraded in nature.

Q.

5th June is celebrated as

1. World Forest Day

2. ​​​​​​World Environment Day

3. World Red Cross Day

4. World Food Day

Q.

1. Pollution and degradation of air
2. Climate change
3. All of the above
4. Over population

Q.

5th June is celebrated as

1. World Forest Day

2. ​​​​​​World Environment Day

3. World Red Cross Day

4. World Food Day

Q. Some great author has said that a population explosion is far more dangerous than an atomic explosion. Justify his statement?

Q. Name the organisms whose uncontrolled activities are damaging the environment.​

Q. Thermal power plants are inevitable in an industrial and densely populated country like ours. What harm do they do to the environment? Also mention any precaution that could be taken to save our environment.