Tag: issues of the environment

Questions Related to issues of the environment

The sea breeze is caused due to the low pressure generated over

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. Land

  2. Sea

  3. Air

  4. Both A and B

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Correct Option: B
Explanation:

During, the daytime when the air above the land gets heated up, the air molecules absorbs the heat and the intermolecular forces between the air molecules become weak and its kinetic energy increases. The air molecules move apart and become less dense and they become lighter and rises up. This creates a low-pressure zone on land and thus cold air from the sea rushes from sea to land and thus creates sea breeze.

So, the correct answer is option B.

Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. Decrease as the air becomes drier

  2. Decrease as the air becomes moister

  3. Increase as the air becomes drier

  4. Increase as the air becomes moister

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Correct Option: A

Where are the days and nights of equal length all year long?

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. At $66.5^{o}$

  2. Nowhere

  3. At $23.5^{o}$

  4. At the Equator

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Correct Option: D

Typically, water vapor occupies about what percentage of the air's volume near the earth's surface?

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. About 78 percent

  2. About 21 percent

  3. Close to 10 percent

  4. Less than 4 percent

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Correct Option: D

At which latitude heat gain through insolation approximately equals heat loss through terrestrial radiation:

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. $22.5^0$ North and South

  2. $40^0$ North and South

  3. $42.5^0$ North and South

  4. $66^0$ North and South

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Correct Option: D

Land and water dwelling plants, may suffer from

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. Ultraviolet radiations

  2. Pollutions

  3. Air pollution

  4. Pollutants

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Correct Option: A

If climate change keeps on disrupting atmospheric pressure, it would bring ice age in

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. America

  2. Northern Europe

  3. Africa

  4. Canada

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Correct Option: B

'The Environment Protection Act' was passed in

business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

  1. 1968

  2. 1974

  3. 1981

  4. 1986

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Correct Option: D
Explanation:

'The Environmental protection Act', 1986, is the most comprehensive law meant for prevention and control of environmental pollution by laying down emission norms and setting up of central and state pollution control boards.

Consider the following statements.
A. By the end of twentieth century, the forest cover in India was reduced to 19.4 percent.
B. National Forest Policy was implemented in the year 1988.
C. The average annual production of dry grass or hay in India is about 250 million tons.
D. About 10% of the world's population lives in arid or semi arid regions.
Of these statements which of the following is true?

business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

  1. A and B are true

  2. A, C and D are not true

  3. A, B and C are true

  4. C is not true

  5. C and D are true

Show answer
Correct Option: C
Explanation:

In India about 20 percent of land is under forest cover. The amount was 30 percent at the beginning of 20th century. The present forest cover of roughly 20 percent is quite small as compared to optimum of 33 percent according to 'National Forest Policy' (1988). It recommends 67 percent forest cover in hills. In India hay availability is roughly 250 million tonnes. 

Which of the following is the measures for controlling carbon dioxide levels in the atmosphere?

business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

  1. Plant more trees

  2. Use of CNG or clean fuel

  3. Treatment of smoke before discharging into atmosphere

  4. All of the above

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Correct Option: D
Explanation:

Measures for controlling carbon dioxide levels in the atmosphere:

  • Plant more trees or afforestation as plants absorb carbon dioxide for photosynthesis.
  • Use of CNG or clean fuel as it releases less amount of pollutants and carbon dioxide
  • Treatment of smoke to remove harmful gasses before discharging into atmospheric.
  • Stoppage of burning fossil fuels.
Thus, the correct answer is option D.