2506: The highest grade of coal, whose surface is shining and has the highest calorific value, is:
(a) Lignite
(b) Peat
(c) Bituminous
(d) Anthracite
2507: Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by
(a) moulds
(b) viruses
(c) protozoa
(d) bacteria
2508: Assertion (A):
During the reign of Shahjahan, Dara Sikoh was sent on expedition to Balkha, Badakh-shan and Qandahar.
Reason (R):
The expedition sent by Shahjahan to the Middle-East was a marvellous success.
(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is NOT a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
2509: During the Indian Freedom Struggle, who of the following raised an army called 'Free Indian Legion' ?
(a) V. D. Savarkar
(b) Rashbehari Bose
(c) Lala Hardayal
(d) Subhas Chandra Bose
2510: 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