Steam burn is more severe than that of boiling water beca...
Steam burn is more severe than that of boiling water because
steam burn is independent of relative humidity
steam possesses greater heat energy per unit mass
water boils at a higher temperature
steam burn is dependent on relative humidity
Correct answer is B
The specific latent heat of vaporization of steam is 2.1 x 106JKg-1
while the energy required to raise the temperature of a unit mass of water from 0°c to 100°c = C x Dt = 4200 x 100 = 420000 = 4.2 x 105 JKg-1
∴ steam possesses greater heat energy per unit mass