2166: Diamond and Emerald contain:
(a) Carbon and silicon
(b) Carbon and zinc
(c) Silicon, aluminium and beryllium
(d) Carbon and calcium
2167: The heater element in an electric iron is made of:
(a) Nichrome
(b) Tungsten
(c) Copper
(d) Iron
2168: The Badami rock inscription of Pulakesin I is dated in the Saka year 465. If the same were to be dated in Vikrama Samvat, the year would be
(a) 601
(b) 300
(c) 330
(d) 407
2169: Acid rain is caused by the pollution of environment by
(a) carbon dioxide and nitrogen
(b) carbon monoxide and carbon dioxide
(c) ozone and carbon dioxide
(d) nitrous oxide and sulphur dioxide
2170: Match List I and (High Officials) with List II (Organisation) select the correct answer using the codes given below the lists
List I List II
(High officials) (Organisation)
A. C P Jain 1. Indian Airlines
B. S Ramadorai 2. NTPC
C. Sunil Arora 3. TCS
D. Vivek Paul 4. Wipro Technologies
Codes:
A B C D
(a) 4 1 3 2
(b) 4 3 1 2
(c) 2 3 1 4
(d) 2 1 3 4