2161: Railway and Telegraphy systems were introduced in India by:
(a) Lord Dalhousie
(b) Lord Cornwallis
(c) Lord Bentinck
(d) Lord Wellesley
2162: What is Agent Orange?
(a) An ace spying group trained by the Police in London
(b) A weed-killing chemical used by the US Military in the Vietnam War
(c) A technique used in the advanced railway safety procedure
(d) A special chemical used in making alloy steel
2163: With reference to Indian transport systems, consider the following statements:
1. Indian railways system is the largest in the world.
2. National Highways cater to 45 per cent of the total road transport demand.
3. Among the states, Kerala has the highest density of surface road.
4. National Highway No. 7 is the longest in the country.
Which of these statements are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 2 and 4
2164: Consider the following conditions of sick human body
1. Swollen lymph nodes
2. Sweating at night
3. Loss of memory
4. Loss of weight
Which of these are the symptoms of AIDS?
(a) 1 and 2
(b) 2, 3 and 4
(c) 1, 2 and 3
(d) 1, 2, 3 and 4
2165: Match List I with List II and select the correct answer using the codes given below the Lists :
List I List II
(Achievement in genetics) (Scientists)
I. Discovery of tramsdiction and Conjugation in bacteria (A) Khurana
II. Establishing the sex-linked inheritance (B) Kornberg
III. Isolation of DNA polymerase form E. coli (C) Lederberg
IV. Establishing the complete genetic code (D) Morgan
(E) Ochoa
Codes:
(a) I-D, II-C, III-B, IV-A
(b) I-C, II-D, III-A, IV-E
(c) I-D, II-C, III-A, IV-E
(d) I-C, II-D, III-B, IV-A