2341: Deserts such as the Sahara are generally found between 20° and 30° latitudes in the western parts of the continents. This is because these regions
(a) Have off-shore winds throughout the year
(b) Have warm off-shore currents
(c) Lie in the belt of the doldrums
(d) Are very hot throughout the year
2342: The escape velocity from the earth's surface is about:
(a) 30 km/sec
(b) 6 km/sec
(c) 11.2 km/sec
(d) 300 km/sec
2343: In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
(a) insects and fungi
(b) limited sunlight and paucity of nutrients
(c) water limits and fire
(d) None of the above
2344: The terms Event Horizon, Singularity, 'String Theory and Standard Model are sometimes seen in the news in the context of
(a) Observation and understanding of the Universe
(b) Study of the solar and the lunar eclipses
(c) Placing satellites in the orbit of the Earth
(d) Origin and evolution of living organisms on the Earth
2345: For outstanding contribution to which one of the following filed is Shanti Swarup Bhatnagar Prize given?
(a) Science
(b) Social Service
(c) Performing Arts
(d) Literature