Environmental Science and Ecology - Mock Test 84

Question 831

Deforestation generally decreases?

A) Rainfall. B) Global warming. C) Soil erosion. D) Drought

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Question 832

In an ecosystem, bacteria are the?

A) Producers. B) Primary consumers. C) Secondary consumers. D) Decomposers

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Question 833

With respect to environment science, full form of SPM is?

A) Suspended Partial Matter. B) Suspended Particulate Matter. C) Suspended Pollutant Matter. D) None of these.

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Question 834

First International Conference on environment held on?

A) March,1968. B) March,1970. C) June,1970. D) June,1972.

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Question 835

The Environment Protection Act enacted on?

A) 1980 B) 1978 C) 1986 D) 1991

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Question 836

Human being can hear range of sound frequency between?

A) 20-20,000 Hertz B) 10-1,000 Hertz C) 1-100 Hertz D) 1-7 Hertz

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Question 837

The disease "Itai Itai" is caused by?

A) Manganize. B) Carbon. C) Cadmium. D) None of these.

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Question 838

Full form of COD is?

A) Chemical Oxide Deman4⃣ B) Chemical Oxygen Deman4⃣ C) Chemical Ozone Deman D) 2⃣ Chemical Oxygen Deman

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Question 839

How much percentage of nitrogen consist in Earth's Atmosphere?

A) 25%. B) 12%. C) 92%. D) 78%.

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Question 840

What is the full form of BOD?

A) Bactorial Oxygen Deman4⃣ B) Biological Oxygen Deman4⃣ C) Biological Oxide Deman D) 2⃣ Biological Oxygen Deman

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