1. Rutherford is the scientist noted for
    1. the discovery of isotopes
    2. the invention of the cyclotron
    3. the first man-made transmutations
    4. the invention of the synchrotron

  2. As a metal rod increases in length due to heating its diameter
    1. decreases
    2. Remain the same
    3. None
    4. increases

  3. Energy is measured in the same units as
    1. work
    2. power
    3. momentum
    4. inertia

  4. The fuse wire has
    1. low resistance
    2. no resistance
    3. None
    4. high resistance

  5. The sea-water is saline because
    1. the see-weeds emit salts
    2. the rain brings salts
    3. None
    4. the rivers bring salts

  6. Glass cracks when heated while a metal does not because
    1. glass is bright
    2. glass is a bad-conductor
    3. glass has pores inside
    4. None of these

  7. Copper is not used in electric heaters because
    1. it is costly
    2. it emits a poisonous gas when heated
    3. it melts at a high temperature
    4. None of these

  8. An electric bulb makes a bang when it is broken because
    1. a gas comes out of the bulb
    2. the tungsten makes the noise
    3. it has a partial vacuum

  9. The sky appears blue due
    1. the colour of the sea water
    2. the presence of water in clouds
    3. to scattering of light by dust particles
    4. None of these

  10. A petrol flame cannot be extinguished by pouring water because
    1. petrol and water react
    2. water floats on petrol
    3. None of these
    4. the heat of petrol fire decomposes water