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प्रश्न
Explain, why water is considered as best liquid for quenching thirst?
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उत्तर
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.
संबंधित प्रश्न
Given below are observations on molar specific heats at room temperature of some common gases.
| Gas |
Molar specific heat (Cv) (cal mol–1 K–1) |
| Hydrogen | 4.87 |
| Nitrogen | 4.97 |
| Oxygen | 5.02 |
| Nitric oxide | 4.99 |
| Carbon monoxide | 5.01 |
| Chlorine | 6.17 |
The measured molar specific heats of these gases are markedly different from those for monatomic gases. Typically, molar specific heat of a monatomic gas is 2.92 cal/mol K. Explain this difference. What can you infer from the somewhat larger (than the rest) value for chlorine?
The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat.
State the effect of enhancement of green house effect.
The global warming has resulted:
(a) the increase in yield of crops
(b) the decrease in sea levels
(c) the decrease in human deaths
(d) the increase in sea levels
The ratio of specific heat capacity to molar heat capacity of a body _____________ .
What is heat? What is the S. I. unit of heat?
Give two reasons as to why copper is preferred over other metals for making calorimeters.
State factors on which the amount of heat radiated by a body depends.
From the options given below the specific heat of _______ is maximum.
The SI unit of specific heat is _______.
