Which of the following is not one of prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric zone?
  • Increased skin cancer
  • Reduced immune system
  • Damage to eyes
  • Increased liver cancer

Which one of the following pairs of gases are the cause of 'Green house effect'?

  •   CO2 and CO

  •   CFCs and SO2

  •   CO2 and N2O

  •   CO2 and O3

Which one of the following expanded forms of the following acronyms is correct?

  •   UNEP - United Nations Environmental Policy

  •   EPA - Environmental Pollution Agency

  •   IUCN -International Union for Conservation of Nature and Natural Resources

  •   IPCC -International Panel for Climate Change

Which one of the following statements is wrong in case Bhopal gas tragedy?

  •   Thousands of human beings died

  •   Radioactive fall-out engulfed Bhopal

  •   It took place on the night of December 2/3, 1984

  •   Methyl isocyanate gas leakage took place

Match correctly the following and choose the correct option

(i) Environment Protection Act                                A. 1974

(ii) Air Prevention & Control of Pollution Act         B. 1987

(iii)Water Act                                                              C. 1986

(iv)Amendament of Air Act to include noise          D. 1981

The correct matches is;

  • i-C, ii-D, iii-A, iv-B

  • i-A, ii-C, iii-B, iv-D

  • i-D, ii-A, iii-B, iv-C

  • i-C, ii-D, iii-B, iv-A

If we consider the problem of environmental pollution, CNG is considered as a better fuel for motor vehicles than diesel primarily because:
 
  •     it burns more efficiently than diesel
  •     it cannot be adulterated
  •     it cannot be siphoned off by thieves
  •     setting up distribution points is very easy
Degradation of ozone continues for a very long time when CFCs are added to the stratosphere because of the formation of which of the following catalyst?
  • Carbon
  • Cl
  • Fe
  • Oxygen

Fill up the blanks:
i. In a scrubber, the exhaust is passed through a spray of _______.

ii. According to Central Pollution Control Board , particulate size _________ or less in diameter are responsible for causing the greatest harm to human health.

iii. Electrostatic precipitator, which can remove __________ present in the exhaust from a thermal power plant.

iv. As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into carbon dioxide and ______.

          i                          ii                                iii                                 iv

                                                         particulate matter 

                                                        particulate matter

  •   Lime          2.8 micro-meters        Gases like sulphur dioxide        Hydrogen

  • Kerosene     2.5 micro-meters        Gases like sulphur dioxide          Water

  • Lime           2.5 micro- meters          Over 99 per cent                     Water

  • Kerosene      2.8 micro- meters       Over 99 per cent                     Hydrogen

Biochemical Oxygen Demand (BOD) in a river water

  • remains unchanged when algal bloom occurs

  • has no relationship with concentration of oxygen in the water

  • gives a measure of Salmonella in the water

  • increases when sewage gets mixed with river water

Ultrasound of how much frequency is beamed into human body for sonography?

  • 30-40 MHz

  • 15-30 MHz

  • 1-15 MHz

  • 45-70 MHz

Photochemical smog pollution does not contain:

  • ozone

  • nitrogen dioxide

  • carbon dioxide

  • PAN (Peroxy Acyl Nitrate)

Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal wastewater into natural surface water is

  • <3.0 ppm

  • < 10 ppm

  • < 100 ppm

  • < 30 ppm

Which of these following methods is the most suitable for disposal of nuclear waste?

  • Bury the waste within rocks deep below the Earth's surface

  • Shoot the waste into space

  • Bury the waste under Antarctic ice-cover

  • Dump the waste within rocks under deep ocean

Which of the following pairs of gases is mainly responsible for green house effect?

  • Carbon dioxide and methane

  • Ozone and Ammonia

  • Oxygen and Nitrogen

  • Nitrogen and Sulphur dioxide

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:

  •   making tubes and pipes

  •   making plastic sacks

  •   use as a fertilizer

  •   construction of roads

Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?

  • Geneva protocol

  • Montreal protocol

  • Kyoto protocol

  • Gothenburg protocol

Assertion: During green revolution, crop production is increased.

Reason: Deforestation is one of the method of green revolution to increases productivity.
  • If both the ssertion and the reason are true and the reason is a correct explanation of the assertion
  • If oth the assertion and reason are true but the reason is not a correct explanation of the assertion
  • If the assertion is true but the reason is false
  • If both the assertion an reason are false

To protect and improve the quality of our environment, government of India has passed Environment (Protection) Act in the year ______

  • 1974

  • 1981

  • 1986

  •   1987

Which of the following is not correct with respect of control of vehicular air pollution in India?

  • Use of CNG as fuel
  • Not phasing out of old vehicles as they have better technology
  • Use of unleaded petrol, low-sulphur petrol and diesel
  • Use of catalytic converter

National Forest Policy __A__ of India has recommended __B__ forest cover for the plains and __C__ for the hills. Fill the blanks with suitable A, B and C
      A       B        C

  • 1988   33%   67%
  • 1988   30%   19.4%
  • 1989   30%    65%
  • 1987   19.4%  30%

Biomagnification of DDT in aquatic food chain leads to high concentration of DDT in fish eating birds. It results in
(1) Disturbance in calcium metabolism in birds.
(2) Thinning of egg shell and their premature breaking.
(3) Decline in birds population

  • (1) and (2) only

  • (2) and (3) only

  • (1) and (3) only

  •   All (1), (2) and (3)

Which of the following statements about ozone is correct ?

  •  Tropospheric ozone protects us from UV radiations.

  •  Stratospheric ozone is 'bad'.

  •  Tropospheric ozone is 'good'

  •  Stratospheric ozone protects us from UV radiations.

Which of the following is an innovative remedy for plastic waste ?

  •  Burning in the absence of oxygen

  •  Burrying 500 m deep below soil surface

  •  Polyblend

  •  Electrostatic precipitator

If an agricultural field is liberally, irrigated for a prolonged period of time, it is likely to face a problem of :

  •  Metal toxicity

  •  Alkalinity

  •  Acidity

  •  Salinity

Snow-blindness in Antarctic regions is due to:

  •   Inflammation of cornea due to high doses of UV-B radiation

  •   High reflection of light from snow

  •   Damage to the retina caused by infra-red rays

  •   Freezing of fluids in the eye by low temperature 

Montreal Protocol was signed if 1987 for control of:

  • Emission of ozone-depleting substances

  • Release of Green House Gases

  • Disposal of e-waste

  • Transport of Genetically modified organisms from one country to another

A species that was introduced for ornamentation but has become a troublesome weed in India :

  • Parthenium hysterophorus

  • Eichhornia crassipes

  • Prosopis juliflora

  • Trapa Spinosa

Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants

  • Vehicular exhaust

  • Allergy causing pollen

  • Noise

  • Particulates of size 2.5 micrometer or below

Dobson units are used to measure thickness of:
  • Ozone
  • Troposphere
  • CFCs
  • Stratosphere

Algal blooms:
I. are the result of a nutrient, like nitrogen or phosphorus from various sources entering the aquatic system and causing excessive growth of algae.
II. lead to increased dissolved oxygen in water body as algae are photosynthetic
 
  • Only I is correct
  • Only II is correct
  • Both I and II are correct
  • Both I and II are incorrect
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Practice Botany Quiz Questions and Answers