Advertisements
Advertisements
Question
Explain, why water is considered as best liquid for quenching thirst?
Advertisements
Solution
Water has the highest specific heat capacity of 4.2 Jg-1 °C-1 and hence it can absorb large amount of heat energy, without rising in temperature sufficiently. Thirst is the natural signal, when body produces more heat energy than required. Thus, water is ideal for quenching thirst, because it can absorb large amount of heat energy.
RELATED QUESTIONS
Give one example where high specific heat capacity of water is used as heat reservoir ?
Why do bottled soft drinks get cooled, more quickly by the ice cubes than by the iced water, both at 0℃?
Name and state the principle used to measure the specific heat capacity of a substance.
(i) State whether the specific heat capacity of a substance remains the same when its state changes from solid to liquid.
(ii) Give one example to support your answer.
What is heat? What is the S. I. unit of heat?
Write two advantages of high specific heat capacity of water.
1 kg of water freezes to form ice at 0°C. What amount of heat is withdrawn?
Write the name.
The amount of heat absorbed at constant temperature by unit mass of a liquid to convert into gaseous phase.
The heat capacity of the vessel of mass 100 kg is 8000 J/°K. Find its specific heat capacity.
When two kilocalories of heat are supplied to a system, the internal energy of the system increases by 5030 J and the work done by the gas against the external pressure is 3350 J. Calculate J, the mechanical equivalent of heat.
