2986: Which one of the following conditions is most relevant for the presence of life on Mars ?
(a) Atmospheric composition
(b) Thermal conditions
(c) Occurrence of ice caps and frozen water
(d) Occurrence of ozone
2987: The crop which grows in alluvial soil and needs 150 cm rainfall is:
(a) Wheat
(b) Rice
(c) Groundnut
(d) Sugarcane
2988: With reference to the usefulness of the by-products of sugar industry, which of the following statements is/are correct?
1. Bagasse can be used as biomass fuel for the generation of energy.
2. Molasses can be used as one of the feed stocks for the production of synthetic chemical fertilizers.
3. Molasses can be used for the production of ethanol.
Select the correct answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2989: Sex chromosomes transmit which of the following diseases?
(a) Myopia
(b) Colour blindness
(c) Longsightedness
(d) Night blindness
2990: In India, during the last decade the total cultivated land for which one of the following crops has remained more or less stagnant ?
(a) Pulses
(b) Oilseeds
(c) Rice
(d) Sugarcane