11: Assertion (A):
Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules.
Reason (R):
DNA fragments can be manipulated using restriction endonucleases and DNA ligases.
(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 a correct explanation of A
(c) A is true but R is false
(d) A is fasle but R is true
12: Which of the following Asian languages are UN official languages?
(a) Chinese and Japanese
(b) Chinese and Arabic
(c) Japanese and Arabic
(d) Chinese and Hindi
13: Which one of the following statements is not true ?
(a) Ghaggar's water is utilised in the Indira Gandhi Canal
(b) Narmada rises from Amarkantak region
(c) Nizam Sagar is situated on the Manjra river
(d) Penganga is a tributary of the Godavari
14: Who among the following organised the famous Chittagong armoury raid ?
(a) Laxmi Sehgal
(b) Surya Sen
(c) Batukeshwar Datta
(d) J.M. Sengupta
15: The Vitamin containing cobalt is
(a) B1
(b) B2
(c) B6
(d) B12