Cattle ranches are known to causes acute green house effect. This is due to
(a) mechanized milking practices
(b) methanogenic bacteria in rumen
(c) decomposition of left over fodder
(d) decomposition of organic remains in faeces.

 

Concept Questions :-

Green House Effect & Global Warming
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Select the correct statement.

(a) Particulate matter of size 10 μm can create severe damage to the lungs.
(b) Particulate matter of size greater than 2.5 μm can get trapped in lungs and cause problems.
(c) Particulate matter of size less than 2.5 μm penetrate deep into lungs.
(d) None of the above.

 

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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.

(a) (i), (ii) and (iii)

(b) (i), (ii) and (iv)

(c) (ii) and (iii)

(d) (iii) and (iv)

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Which of the following is a secondary pollutant?

(a) Carbon dioxide
(b) Nitrogen oxides
(c) Peroxyacyl nitrates
(d) All of these

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Match teh following and select the correct option.

Column- I

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

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

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

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

 

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One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as 
(a) N2O and CO2
(b) CFCs and N2O
(c) methane and CO2
(d) methane and CFCs

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Which one option is incorrectly matched regarding biological magnification of DDT in aquatic ecosystem.
(a) Small fish                        0.5 ppm 
(b) Large fish                        2 ppm
(c) Fish eating birds               25ppm
(d) Zoopkankton                   0.003 ppm

Concept Questions :-

Water Pollution: I
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Which one is matched correctly?
(a) Arsenic-Black foot disease
(b) Fluoride--Itai-itai
(c) Mercury-Skeletal fluorosis
(d) Cadmium-Minamata disease

 

Concept Questions :-

Water Pollution: II
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Green muffler play a important role against
(a) noise pollution
(b) radioactive pollution
(c) soil pollution
(d) air pollution

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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 
(a) Forest Research Institutes
(b) Panel of focal communities for forest management 
(c) Joint forest Management
(d) Jhum Cultivation

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