If Green house effect had not there on Earth, the average temperature would be

(1) -18℃

(2) 10℃

(3) 0℃

(4) -2℃

Subtopic:  Green House Effect & Global Warming |
 94%
From NCERT
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Greenhouse gases

(1) Absorb long wave or infrared radiation from the Earth

(2) Emit the long wave or infrared radiation towards the Earth

(3) Can neither absorb nor emit

(4) Both A and B

Subtopic:  Green House Effect & Global Warming |
 66%
From NCERT
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Which of the following is wrong?

A.Emission of infrared by Earth's Surface

B.Clouds and gases reflect one fourth of incoming solar radiation

C. Carbon dioxide and methane absorb a major fraction of infrared radiation emitted by Earth

D. During the past century, the temperature of Earth has increased by 0.6℃, most of it during the last five decades

Subtopic:  Green House Effect & Global Warming |
 67%
From NCERT
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What does El Nino effect mean?

(1) Rise in temperature due to global warming going to result in odd climatic changes

(2) Rise in use of chemical fertiliser going to cause metabolic disorder

(3) Rise in use of CFCs going to cause ozone depletion

(4) Rise in use of Plastic going to destroy sea animals

Subtopic:  Green House Effect & Global Warming |
 92%
From NCERT
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Relative contribution of various greenhouse gases to total global warming will not be

(1) Carbon dioxide-60%

(2) Methane-20%

(3) CFCs-14%

(4) N2O-12%

Subtopic:  Green House Effect & Global Warming |
 88%
From NCERT
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Ozone

(1) Ozone hole is the area above Antarctica

(2) Ozone layer is the thinnest above Antartica

(3) Ozone thickness is measured in Dobson unit

(4) All of these

Subtopic:  Ozone Layer Depletion |
 94%
From NCERT
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Bad Ozone

(1) Formed in lower atmosphere

(2) Formed in Troposphere

(3) Harms plants and animals but is not lethal

(4) All of these

Subtopic:  Ozone Layer Depletion |
 85%
From NCERT
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Good ozone is

(1) Found in the upper strata of the atmosphere

(2) Found in Stratosphere

(3) Acts as a shield to UV light

(4) All of these

Subtopic:  Ozone Layer Depletion |
 94%
From NCERT
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The thickness of ozone is measured in

(1) Dobson units

(2) Decibel

(3) Centi Morgan

(4) Centi meter

Subtopic:  Ozone Layer Depletion |
 97%
From NCERT
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UV rays are highly injurious to living organisms

(1) Because DNA and Protein preferentially refract UV light

(2) Because DNA and Protein preferentially radiate UV light in the form of heat energy

(3) Because DNA and Protein preferentially absorb UV light and as a result chemical bonds are broken

(4) Both B and C

Subtopic:  Ozone Layer Depletion |
 72%
From NCERT
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