1) Recently, the team of scientist from ISRO's Vikram Sarabhai Space Centre has developed what is called 'blue air'. What does blue air refers to?
a) Silica aerogel, the lightest synthetic material.
b) Artificial oxygen
c) Pollutant absorbing synthetic material.
d) None of the above.
2) Which of the following is/are the properties of the blue air or silica aerogel?
a) High thermal resistance.
b) Good insulation.
c) Both a and b
d) Neither a nor b
3) Which of the following factors is/are responsible for the forest fires in India?
a) High temperature and low moisture.
b) Intense winds.
c) Human actions.
d) All of the above.
4) In what ways do the forest fires affect the surrounding ecosystem?
a) By emitting harmful aerosols.
b) By threatening the life of flora and fauna of the region.
c) By limiting the habitable zones of wildlife.
d) All of the above.
5) Which of the following is not one of the measures to control the vehicular pollution in India?
a) Using catalytic converters on diesel engines.
b) Converting diesel vehicles to CNG mode.
c) Car pooling.
d) Allowing heavy vehicles only at non-rush hours.
Answers :
1) a
2) c
3) d, Forest dwellers often start fires to create new ground to get a fresh crop of grass for livestock. This often go out of control and lead to widespread devastation of forests.
4) d
5) b, Currently there is no technology that can convert diesel vehicles to CNG.
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