Environmental issues Quiz 7

Question 1

The two gases making highest relative contribution to the greenhouse gases are

Accepted Answer

$CO_2$ and $CH_4$

Answer

$CH_4$ and $N_2 O$

Answer

CFCs and $N_2 O$

Answer

$CO_2$ and $N_2$

Question 2

Which is the chief reason of global warming ?

Accepted Answer

Greenhouse effect

Answer

Absorption of UV radiations by ozone

Answer

Effect of visible light

Answer

Trapping of radio waves

Question 3

Why naturally occurring greenhouse effect is important?

Accepted Answer

It maintains the temperature of earth at average 15 &deg;C.

Answer

It maintains the temperature of earth at 18 &deg;C.

Answer

It maintains lot of greenery on the surface of the earth.

Answer

It maintains level of ozone in atmosphere.

Question 4

Clouds and gases reflect about &hellip;&hellip;&hellip;&hellip;&hellip;&hellip;&hellip; of the incoming solar radiation.

Accepted Answer

one-fourth

Answer

one half

Answer

one tenth

Answer

three-fourth

Question 5

Montreal Protocol aims at &hellip;&hellip;&hellip;&hellip;&hellip;

Accepted Answer

Reduction of ozone depleting substances

Answer

Biodiversity conservation

Answer

Control of water pollution

Answer

Control of $CO_2$ emission

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