2541: Assertion (A): The same face of the Moon is always presented to the Earth.
Reason (R): The Moon rotates about its own axis in 23 ½ days which is about the same time that it takes to orbit the Earth.
(a) Both A and R are individually true and R is the correct explanation of A.
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false.
(d) A is false but R is true.
2542: Which one of the following pairs is correctly matched ?
(a) Bhaskaracharya : Ashtanga Sangraha
(b) Bhatti : Sisupala Vadha
(c) Hemachandra : Kathasaritsagara
(d) Sri Harsha : Naishadha Charita
2543: Match List I with List II and select the correct answer using the codes given below the lists :
List I
I. Theory of Mutation
II. Theory of Evolution
III. One gene one enzyme hypothesis
IV. Operon concept
List II
(A) Beadk and Tatum
(B) Jacob and Monod
(C) Darwin
(D) De Vries
Codes:
(a) I-C, II-D, III-A, IV-B
(b) I-D, II-C, III-A, IV-B
(c) I-D, II-C, III-B, IV-A
(d) I-C, II-D, III-B, IV-A
2544: In India, cluster bean (Guar) is traditionally used as a vegetable or animal feed, but recently the cultivation of this has assumed significance.
Which one of the following statements is correct in this context ?
(a) The oil extracted from seeds is used in the manufacture of biodegradable plastics
(b) The gun made from its seeds is used in the extraction of shale gas
(c) The leaf extract of this plant has the properties of anti-histamines
(d) It is a source of high quality biodiesel
2545: Which one of the following issues the 'Global Economic Prospects' report periodically?
(a) The Asian Development Bank
(b) The European Bank for Reconstruction and Development
(c) The US Federal Reserve Bank
(d) The World Bank