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प्रश्न
Explain, Why is it advisabile to pour cold water over burns, caused on human body, by hot solids?
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उत्तर
Water has the highest specific heat capacity of 4.2 Jg-1°C-1. Thus, it can extract large amount of heat energy rapidly from the site of burn and hence gives a lot of relief.
संबंधित प्रश्न
Specific heat capacity of substance A is 3.8 J g-1K-1 whereas the specific heat capacity of substance B is 0.4 J g-1 K-1
(i) Which of the two is a good conductor of heat?
(ii) How is one led to the above conclusion?
(iii) If substances A and B are liquids then which one would be more useful in car radiators?
What do you mean by the following statement?
The heat capacity of a body is 50 JK-1?
State the effect of enhancement of green house effect.
What is meant by global warming?
A calorimeter has mass 100 g and specific heat 0.1 kcal/ kg °C. It contains 250 gm of liquid at 30°C having specific heat of 0.4 kcal/kg °C. If we drop a piece of ice of mass 10 g at 0°C, What will be the temperature of the mixture?
The specific heat capacity of a body depends on _____________ .
What are other units of heat? Name and define them.
The heat capacity of the vessel of mass 100 kg is 8000 J/°K. Find its specific heat capacity.
The molar specific heats of an ideal gas at constant pressure and constant volume are denoted by Cp and Cv respectively. If `gamma = "C"_"p"/"C"_"v"` and R is the universal gas constant, then Cp is equal to ______.
Match the columns:
| Column ‘A’ | Column ‘B’ |
| The SI unit of specific heat capacity | (a) Jkg−1°C−1 |
| (b) kg/m3 | |
| (c) calorie |
