Class VIII

Name the scientist who showed that lightning and the spark from your clothes are essentially the same phenomena?
  1. Thomas Alva Edison
  2. Benjamin Franklin
  3. Franklin D. Roosevelt
  4. Isaac Newton
Which device is used to protect building from lightning conductor?
  1. Seismograph
  2. Lightning Conductor
  3. Barometer
  4. Thermal Conductor
In thunderstorm, the charges accumulate near the upper edges of clouds are
  1. negatively charged
  2. positively charged
  3. neutral
  4. none of these
The charge acquired by a glass rod when it is rubbed with silk is considered as ...
  1. neutral
  2. either positive or negative
  3. positive
  4. negative
Two objects with unlike charges will ...
  1. attract each other
  2. repel each other
  3. either attract or repel
  4. neither attract nor repel
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