```       (a)  4         2        3          1
(b)  3         1        2          4
(c)  2         4        1          3
(d)  1         3        4          2
Ans : (c)
167. One micron is equal to:
(a) 1/10 th of mm
(b) 1/100 th of mm
(c) 1/1000 th of mm
(d) 1/10000 th of mm
Ans : (c)
168. One horse power is equal to :
(a) 736 watts
(b) 746 watts
(c) 748 watts
(d) 756 watts
Ans : (b)
169. What is the number of basic units in the International System of Units?
(a) 4
(b) 5
(c) 6
(d) 7
Ans : (d)
170. Match the following:
Physical Quantity                       Unit
A. Electric force              1.    Volt between two
charged bodies
B.    Electric charge          2.    Newton
D.    Electric capacity        4.    Coulomb
A         B        C          D
(a)  1         3        4          2
(b)  1         4        3          2
(c)  2         4        3          1
(d)  2         3        4          1
Ans : (d)
171. If you swim one km, how many miles do you swim? [HoteI Management, 1992]
(a) 0.5
(b) 0.62
(c) 0.84
(d) 1.6
Ans : (b)
172. Match the following: [CDS1992]
228
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