RRB Group-D Model Paper 18 with answers for online practice

Question : 26 of 100

Marks: +1, -0

Which of the following produces more severe burns?

Solution:

Steam produces more severe burns than boiling water.
We know that both boiling water and steam, the temperature is around 100-degree celsius but steam causes severe burns.
Steam has more energy than boiling water.
It possesses the additional latent heat of vaporization.
So, when steam falls on the skin and condenses to produce water it gives out 22.5 x $10^5$ J/kg more heat than boiling water at the same temperature.
Therefore, burns produced by steam are more severe than those produced by boiling water.

Go to Question:

Prev Question

Next Question