Question

The sprinkling of water reduce the temperature of a closed room because: 

Solution

Correct option is

Water has large latent heat of vaporisation

When water is sprinkled in a closed room, it starts evaporating and some energy is lost in the process of conversion of liquid into vapoursWhich results in cooling. Further, water has large latent heat of vaporisation   

SIMILAR QUESTIONS

Q1

Which of the following has the highest specific heat? 

Q2

Which of the following has the highest specific heat? 

Q3

A liquid is being converted into vapours at its bp; the specific heat of liquid at this temperature will be:

Q4

Specific heat of a gas undergoing adiabatic change is:

Q5

Which of the following produces more servere burns? 

Q6

A body cools from 91oC to 89oC in 5 minutes when the room temperature is 20oC. Then it will cool from 71oC to 69oC in:   

Q7

Three liquids with masses m1m2m3 are thoroughly mixed. If their specific heats are s1s2s3 and their temperature θ1θ2θ3 respectively, then the temperature of the mixture is:    

Q8

80 gm of water at 30oC is poured on a large block of ice at 0oC. The mass of ice that melts is:

Q9

250 gm of water and equal volume of alcohol of mass 200 gm are replaced successively in the same calorimeter and cool from 60oC to 55oC in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is 10 gm, then the specific heat of alcohol in cal/gm-oC is:   

Q10

Two bars of copper having same length but unequal diameter are heated to the same temperature. The change in length will be: