621: With reference to soil conservation, consider the following practices :
1. Crop rotation
2. Sand fences
3. Terracing
4. Wind breaks
Which of the above are considered appropriate methods for soil conservation in India ?
(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1, 3 and 4 only
(d) 1, 2, 3 and 4
622: Which one of the following pairs of composers in different languages and their works on the Mahabharata theme is correctly matched ?
(a) Sarladasa --Bengali
(b) Kasirama -- Oriya
(c) Tikkana -- Marathi
(d) Pampa -- Kannada
623: 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
624: The given figure shows a portion of Southern India. The proposed site (Koodankulam) for the construction of two 1000 MW nuclear power plants has been labelled in the map as
(a) A
(b) B
(c) C
(d) D
625: The Panchayati Raj was first introduced in the States of Rajasthan and
(a) Andhra Pradesh
(b) Bihar
(c) Gujarat
(d) Orissa