Cattle ranches are known to causes acute green house effect. This is due to

 
  • mechanized milking practices

  • methanogenic bacteria in rumen

  • decomposition of left over fodder

  • decomposition of organic remains in faeces.

Select the correct statement.

 

  • Particulate matter of size 10 μm can create severe damage to the lungs.

  • Particulate matter of size greater than 2.5 μm can get trapped in lungs and cause problems.

  • Particulate matter of size less than 2.5 μm penetrate deep into lungs.

  • None of the above.

A large quantity of urban sewage is drained to nearby village river. Which among the given conditions would happen after mixing of sewage into the river?

(i) Biochemical oxygen demand (BOD) of receiving water body increases.
(ii) Dissolved oxygen of receiving water body decreases.
(iii) It will not cause mortality among fishes and other aquatic creatures
(iv) It will lead to nutrient enrichment of receiving water body.

  • (i), (ii) and (iii)

  • (i), (ii) and (iv)

  • (ii) and (iii)

  • (iii) and (iv)

Which of the following is a secondary pollutant?

  • Carbon dioxide

  • Nitrogen oxides

  • Peroxyacyl nitrates

  • All of these

Match teh following and select the correct option.

Column- IColumn- II
A. Emphysema
B. ADA deficiency
C. Eutrophication
D. Biomagnification		(i) Increase in the concentration of non-biodegrable substances in food chains
(ii) α-1 antitrypsin
(iii) Bone marrow transplantation
(iv) Nutrient enrichment of water body

 

  • A - (iii), B - (ii), C - (iv), D - (i)

  • A - (ii), B - (iii), C - (iv), D - (i)

  • A - (i), B - (iii), C - (ii), D - (iv)

  • A - (iv), B - (ii), C - (iii), D - (i)

One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as 

  • N2O and CO2

  • CFCs and N2O

  • methane and CO2

  • methane and CFCs

Which one option is incorrectly matched regarding biological magnification of DDT in aquatic ecosystem.

(3) Fish eating birds               25ppm
  • Small fish                        0.5 ppm 

  • Large fish                        2 ppm

  • (4) Zoopkankton                   0.003 ppm

  • 4

Which one is matched correctly?

 
  • Arsenic-Black foot disease

  • Fluoride--Itai-itai

  • Mercury-Skeletal fluorosis

  • Cadmium-Minamata disease

The government of India in 1980s has introduced a concept to work closely with the local communities for protecting and managing forests. The concept is 

  • Forest Research Institutes

  • Panel of focal communities for forest management 

  • Joint forest Management

  • Jhum Cultivation

The thickness of the ozone is measured in terms of:-
  • P

  • DU

  •  µ

  • RA

Pollution:

  • Any undesirable change in physical characteristics of air, land water and soil
  • Any undesirable change in biological characteristics of air, land water and soil
  • Any undesirable change in physical, chemical and biological characteristics of air, land water and soil
  • Any undesirable change in physical and chemical characteristics of air, land water and soil

Agents that bring undesirable change in biological, physical and chemical environment is called

  • Pollutant

  • Bioparcy

  • Bioinformatics

  • Biomagnification

Environment Protection Act protects and improves the quality of

  • Air

  • Water

  • Soil

  • All of these

Harmful effects of Air pollutants depend upon

  • Organism exposed

  • Duration of exposure

  • Concentration of pollutants

  • All of these

Smokestacks of thermal power plants, smelters and other industries release

  • Particulate air pollutant

  • Gaseous air pollutant

  • Harmful gases

  • All of these

The particulate matter in exhaust from industries can be removed by

  • Electrostatic Precipitator

  • Scrubber

  • Both of these

  • Cannot be removed

Which of the following is not true about electrostatic precipator?

  • It can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant

  • Electrode wires maintained at thousand volts, which produce a corona that release electrons

  • The protons are attached to dust particle give them a net positive charge

  • The collecting plates attract the dust particles

In an electrostatic precipitator,
  • The velocity of air between the plates must be low enough to allow the dust to fall.

  •  The velocity of air between the plates must be very high to purify the air.

  • There is no air between plates so that charge may not get disturbed

  • None of these

Scrubber

  • Can remove only sulphur dioxide

  • Can remove gases like sulphur dioxide

  • Can remove harmless gases

  • Mix harmless gases with gaseous pollutants

In scrubber, exhaust is passed through

  • A spray of water/lime

  • A spray of electrons

  • A spray of other harmless gases

  • All of these

CPCB stands for

  • Control Pollution Central Board

  • Central Population Control Board

  • Central Pollution Control Board

  • Control Population Central Board

The particulate matter cannot cause

  • Breathing respiratory symptoms

  • Irritation, premature death

  • Inflammation and damage to the lungs

  • Gastric ulcer and Rhinitis

In metro cities, which of the following is the major cause of atmospheric Pollution?

  • Automobiles

  • Population

  • Industries

  • All of these

To stop, automobile based environmental pollution, which of the following is not going to be a helpful measure?

  • Proper maintenance of automobile

  • Use of lead free petrol or diesel

  • Catalytic Converters

  • Scrubber

Which of the following is not a metal of catalytic converter?

  • Platinum

  • Palladium

  • Rhodium

  • Molybdenum

Catalytic converter does

  • Unburnt Hydrocarbons are converted into carbon dioxide and water

  • CO is converted into Carbon dioxide

  • Nitric oxide is converted into Nitrogen gas

  • All of these

If one is using Catalytic Converter in his vehicle then he should use

  • Leaded petrol as it activates the catalyst

  • Unleaded petrol activates the catalyst

  • Leaded petrol as it inactivates the catalyst

  • Unleaded petrol as lead inactivates the catalyst

The Air Prevention and Control of Pollution act came into force in….. but was amended in …..

  • 1981, 1986

  • 1986, 1987

  • 1981, 1987

  • 1976, 1986

Noise does not cause

  • Sleeplessness

  • Increased heartbeat, Altered breathing pattern

  • Nausea, change in vision

  • Stress

Noise pollution can be controlled by

  • Use of sound absorbent material

  • Delimitation of horn free zones around hospitals and schools

  • Permissible sound levels of crackers and timing of loud speakers

  • All of these

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Practice Botany Quiz Questions and Answers