Question

Ice is found to be slippery when a man walks on it. This is so because :

• A. increase in pressure causes ice to melt faster
• B. increase in pressure causes ice to melt slower
• C. its surface is smooth and cold
• D. ice is colder

Answer 1

The correct option is A increase in pressure causes ice to melt faster

Abnormal solids, like ice and bismuth, contract on melting into liquids. When pressure is applied on the surface of such a solid, the change into the liquid is assisted. Thus, the melting point of ice is lowered by the application of pressure.