NEET Environmental Issues MCQs May ’17

1. Select the correct statements) regarding green house effect.
(a) Much of the long wavelength infrared radiations re-radiated by the earth’s surface are absorbed by the atmospheric green house gases.
(b) C02, CH4, CFCs and N20 are the gases which are responsible for green house effect.
(c) The atmosphere is transparent to the incoming short- wavelength radiations and is translucent to the long- wavelength infrared radiations.
(d) All of these

2. Montreal Protocol is associated with
(a) control of emission of ozone depleting substances
(b) control of radioactive wastes
(c) control of desertification
(d) protection and management of forests.

3. Given pie-diagram represents the relative contribution of various GHGs to total global warming. Select the correct statement(s) regarding A, B and C.
(a) A is the gas which is produced during the combustion of fossil fuels.
(b) B are the chemicals which are used as coolants in refrigerators
(c) C is the gas which is the major constituent of biogas.
(d) All of these

4. Green muffler scheme helps to reduce
(a) air pollution (b) noise pollution
(c) e-wastes (d) both (a) and (b)

5. Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by
(a) storing them in underground storage tanks
(b) using them for producing biogas
(c) dumping them in river
(d) using them directly as biofertilizers

6. Which of the following statements is correct?
(a) Incineration is burning of waste materials at 900 – 1000°Cfor their disposal.
(b) Municipal solid wastes are wastes from homes, offices, stores, schools, hospitals, etc., that are collected and disposed by the municipality.
(c) In a sanitary landfill, wastes are dumped in a depression or trench after compaction, and covered with dirt everyday.
(d) All of these.

7. The thickness of ozone in a column of air from the ground to the top of the atmosphere is measured in terms of
(a) Decibel units (b) Pascal units
(c) Svedberg units (d) Dobson units.

8. Ozone hole refers to
(a) reduction in the thickness of ozone layer in stratosphere
(b) reduction in ozone layer in troposphere
(c) hole in the ozone layers
(d) increased concentration of ozone.

9. The Environment (Protection) Act to protect and improve the quality of environment (air, water and soil) was passed by the Government of India in the year
(a) 1971 (b) 1974 (c) 1981 (d) 1986.

10. Nuclear power stations even with adequate radiation safety measures generate
(a) thermal pollution of water bodies
(b) thermal pollution of soil
(c) noise pollution
(d) all of these.

11. Positive pollution of soil is due to
(a) deposition of wind blown salts on land
(b) addition of wastes on soil
(c) excessive use of fertilizers
(d) all of these.

12. Sound above what level is considered hazardous noise pollution?
(a) above 140 dB (b) above 80 dB
(c) above 30 dB (d) below 30 dB

13. Protective layer of ozone in the atmosphere exists in which layer?
(a) Troposphere (b) Ionosphere
(c) Stratosphere (d) Atmosphere

14. Which one of the following pairs is mismatched?
(a) Fossil fuel burning – release of C02
(b) Nuclear power – radioactive wastes (c) Solar energy – greehouse effect
(d) Biomass burning – release of C02

15. Read the given statements and select the correct option. Statement 1 : C02 fertilization effect results in increased rate of photosynthesis particularly in C3 plants. Statements 2 : Response of plants to increased concentrations of C02 is called C02 fertilization effect.
(a) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
(b) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
(c) Statement 1 is correct and statement 2 is incorrect.
(d) Both statements 1 and 2 are incorrect.

16. Which of the following is true regarding the effects of thermal water pollution?
(a) It leads to deoxygenation of water.
(b) It creates a barrier for oxygen penetration in deep cold waters.
(c) It alters the composition of flora and fauna in particular zones.
(d) All of these.

17. Increasing skin cancer and high mutation rate are the result of
(a) Ozone depletion (b) Acid rain
(c) CO pollution (d) C02 pollution.

18. Global warming will cause
(a) rise in level of oceans (b) decrease in glaciers (c) reduction in ice caps (d) all of these.

19. Match Column-I and Column-ll and select the correct option.

20. Excess atmospheric C02 increases green house effect as C02
(a) precipitates dust in the atmosphere
(b) reduces atmospheric pressure
(c) is opaque to infra red rays
(d) is not opaque to infra red rays

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