Class VII

Stopper is made up of
  1. metal
  2. transition metal
  3. good insulator of heat
  4. poor insulator of heat
Poor conductors of heat are called
  1. electrical insulators
  2. electrical conductors
  3. thermal conductors
  4. thermal insulators
Device captures heat by
  1. radio waves
  2. Infrared radiations
  3. gamma radiations
  4. ultraviolet radiations
Objects that are cooler than their surroundings
  1. gain heat
  2. lose heat
  3. transfer heat
  4. share heat
If we stir a cup of hot coffee with a plastic spoon, handle of spoon will
  1. get hot
  2. remain cold
  3. may become hot or remain cold
  4. balance with room temperature
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