A. Resistance        1. Ampere
           B. Current 2. Newton
           C. Force             3. Watt
           D. Power             4. Ohm
            A         B         C          D
       (a)  1         4         3          2
       (b)  4         1         2          3
       (c)  1         2         4          3
       (d)  4         2         3          1
Ans : (b)
173. Match the following: [NDA 1995]
                 Items                          Units of length
           A.   Distance       between    1.    Microns
                earth and stars
           B.   Inter atomic distances    2.    Angstroms
                in a solid
           C.   Size of nucleus           3.    Light year
           D.   Wavelength of             4.    Fermi
                infrared laser
                                          5.    Kilometres
            A         B         C          D
       (a)  3         2         4          1
       (b)  3         4         1          2
       (c)  5         2         4          3
       (d)  5         4         2          1
Ans : (a)
174. Match the following: [IAS 1991]
           A. Anemometer                     1.   High temperatures
           B. Tachometer                     2.   Power of machine
           C. Pyrometer                      3.   Rotation speed
           D. Dynamometer                    4.   Velocity of fluid
            A         B         C          D
       (a)  2         1         3          4
       (b)  3         4         2          1
       (c)  4         3         1          2
       (d)  4         3         2          1
Ans : (c)
175. The picture tube of a black and white T.V. set has only one electron gun that produces the picture on its screen. The number of
     electron guns, a colour picture tube has is:
       (a) five
       (b) three
       (c) four
       (d) six
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