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Environment Quiz 10. 05. 2018

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Question 1

Which of the following is/are correct about Ozone hole?
1) It is an area of the Antarctic troposphere in which the recent ozone levels have dropped to as low as 33 percent of their pre-1975 values.
2) This hole occurs during Antarctic spring which is from March to April.
3) In recent times, El-nino and volcanic eruptions have also impacted this Ozone hole

Question 2

Coral bleaching has been a matter of concern for the all ecologists taking into consideration of their importance in marine food chain. Which of the following factors are responsible for this coral bleaching?
1). ultraviolet wavelengths
2). increase in marine salinity
3). exposure to the air
4). sedimentation
5). xenobiotics

Question 3

Chlorofluorocarbons, known as ozone-depleting substances, are used –
1) In the production of plastic foams.
2) In the production of tubeless tyres.
3) In cleaning certain electronic components.
4) As pressurizing agents in aerosol cans.
Which of the statements given above is/are correct?

Question 4

Consider the following statements –
1) Fuel obtained from plastic waste has high octane rating. It contains no lead and is known as “green fuel”.
2) Methane, commonly known as biogas, is used to produce electricity.
Correct options are –

Question 5

Consider the following statements –
1) Deforestation is the conversion of forested areas to non-forested ones.
2) Afforestation is the process of restoring a forest that once existed but was removed at some point of time in the past.
Correct options are –
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May 10Other State PSC