What produces more severe burns, boiling water or steam?
Steam produces severe burns. It is because it is an exothermic reaction that releases high amount of heat which it had consumed during vaporization.
Name A, B, C, D, E and F in the following diagram showing a change in its state.
Why is ice at 273K more effective in cooling than water at the same temperature?
Give two reasons to justify -
(a) Water at room temperature is a liquid.
(b) An iron almirah is a solid at room temperature.
What is the physical state of water at -
Arrange the following in increasing order of forces of attraction between the particles - water, sugar, oxygen.