Advertisements
Advertisements
प्रश्न
Why does steam cause more severe burns than boiling water ?
उत्तर
Steam can be more dangerous than boiling water because steam contains more heat in the form of latent heat, as compared to boiling water at the same temperature. When steam falls on skin and condenses to form water, it gives out 22.5 × 105 J/kg more heat than boiling water at the same temperature as in boiling water, heat being taken up is being used to form steam.
APPEARS IN
संबंधित प्रश्न
What do you understand by the change of phase of a substance?
What is meant by saying that the latent heat of fusion of ice is 3.34 × 105 J/kg ?
Why is solid carbon dioxide known as dry ice ?
Which contains more heat, 1 kg of ice of 0° C or 1 kg of water at 0° C ? Give reason for your answer.
Define the following term Boiling.
One of the following does not undergo sublimation. This one is :
Give two examples of the following:
Substances which are rigid and not compressible
With the help of a simple diagram how would you show that – solids expand on heating
Complete the statement by filling the blank with the correct word given below.
Conversion of vapour [or gas] into a liquid is termed ____________.
Give the reason for the following
Solids cannot be compressed, but gases are highly compressible.