Question

Water is used in hot water bottles for fomentation (therapeutic application of warmth to relieve pain). Give reason.

• A. water remains hot in the bottle for a long time
• B. water remains cold in the bottle for a long time
• C. water remains hot in the bottle for a short time
• D. water remains cold in the bottle for a short time

Answer 1

The correct option is A water remains hot in the bottle for a long time

Water has the highest specific heat capacity. Therefore it takes a long time to heat it and long time to cool it. This is the reason why hot water bottles are used for fomentation, as the water remains hot in the bottle for a long time in spite of giving off large quantities of heat.