(a) 1 2 3 4
(b) 2 4 1 3
(c) 3 1 4 2
(d) 4 3 2 1
Ans: (c)
243. Match the following:
List-I List-II
(Name of Vitamin) (Source)
A. Thiamin 1. Cod-liver Oil
B. Riboflavin 2. Honey
C. Pyridoxine 3. Potato
D. Retinol 4. Wheat
A B C D
(a) 4 3 2 1
(b) 1 2 3 4
(c) 4 1 2 3
(d) 1 3 4 2
Ans: (a)
244. Invert sugar is
(a) sucrose
(b) glucose
(c) fructose
(d) a mixture of glucose and fructose
Ans: (d)
245. Cholesterol is
(a) a carbohydrate
(b) a protein
(c) a lipid
(d) a hormone
Ans: (c)
246. The main element used in the vulcani-sation of rubber is
(a) nickel
(b) copper
(c) sulphur
(d) graphite
Ans: (c)
247. Concrete is a mixture of
(a) cement an limestone
(b) cement and sand
(c) cement and gravel
(d) cement, sand and gravel
Ans: (d)
248. Vulcanisation was discovered by
(a) Goodyear
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