646: Cover of a solar cooker is made of glass. Why ?
(a) It absorbs sun rays
(b) It reflects sun rays
(c) Sun heat is transmitted through glass without much absorption
(d) None of these
647: Among the following who was the proponent of the "Bhakti Cult" from West Bengal?
(a) Chaitanya Prabhu
(b) Ramanujacharyulu
(c) Ramanand
(d) Kabir
648: The marine animal called dugong which is vulnerable to extinction is a/an
(a) Shark
(b) Mammal
(c) Amphibian
(d) Bony fish
649: A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. What will be the respective remainders if it is successively divided by 5 and 4?
650: With reference to land reforms in independent India, which one of the following statements is correct?
(a) The ceiling laws were aimed at family holdings and not individual holdings.
(b) The major aim of land reforms was providing agricultural land to all the landless.
(c) It resulted in cultivation of cash crops as a predominant form of cultivation.
(d) Land reforms permitted no exemptions to the ceiling limits.