1. The most significant impact of volcanic eruption has been felt in the form of:
(A) change in weather
(B) sinking of islands
(C) loss of vegetation
(D) extinction of animals

2. With absorption and decomposition of CO2 in ocean water beyond desired level, there will be:
(A) decrease in temperature
(B) increase in salinity
(C) growth of phytoplankton
(D) rise in sea level

3. Arrange column II in proper sequence so as to match it with column I and choose the correct answer from the code given below:
Column I                                 Column II
Water Quality                         pH Value
(a) Neutral                               (i) 5
(b) Moderately acidic              (ii) 7
(c) Alkaline                             (iii) 4
(d) Injurious                            (iv) 8

(a)        (b)        (c)        (d)
(A)       (ii)        (iii)       (i)         (iv)
(B)       (i)         (iii)       (ii)        (iv)
(C)       (ii)        (i)         (iv)       (iii)
(D)       (iv)       (ii)        (iii)       (i)

4. The maximum emission of pollutants from fuel sources in India is caused by:
(A) Coal
(B) Firewood
(C) Refuse burning
(D) Vegetable waste product

5. The urbanisation process accounts for the wind in the urban centres during nights to remain:
 (A) faster than that in rural areas
(B) slower than that in rural areas
(C) the same as that in rural areas
(D) cooler than that in rural areas