Class X

Amount of pressure of liquid increases with
  1. Volume
  2. Base area
  3. Mass
  4. Depth
 Evaporation takes place
  1. Throughout liquid
  2. Only at surface
  3. From sides only
  4. At bottom only
Power is defined as
  1. p = W/t, where W is work and t is time
  2. p = t/W, where t is time and W is work
  3. p = W/d, where W is work and d is distance
  4. p = d/W, where d is distance and W is work
Particular temperature on which a liquid boils is known as
  1. Boiling point
  2. Condensation point
  3. Melting point
  4. Sublimation point
In a science lab, a student heats up a chemical from 10 °C to 25 °C which requires thermal energy of 30000 J. If mass of object is 40 kg, specific heat capacity of chemical would be
  1. 25 J kg-1 °C-1
  2. 50 J kg-1 °C-1
  3. 75 J kg-1 °C-1
  4. 100 J kg-1 °C-1
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