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प्रश्न
The specific heat capacity of water is :
विकल्प
4200 J kg-1 K-1
420 J g-1 K-1
0.42 J g-1 K-1
4.2 J kg-1 K-1
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उत्तर
4200 J kg-1 K-1
संबंधित प्रश्न
What amount of heat must be supplied to 2.0 x 10-2 kg of nitrogen (at room temperature) to raise its temperature by 45 °C at constant pressure? (Molecular mass of N2 = 28; R = 8.3 J mol-1 K-1.)
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?
A heater of power P watt raises the temperature of m kg of a liquid by Δt K in time t s. Express
the specific heat capacity of liquid in terms of above data.
What change in heat energy occurs when lead at its melting point
solidifies without change in the temperature?
Some heat is provided to a body to raise its temperature by 25°C. What will be the corresponding rise in temperature of the body as shown on the Kelvin scale?
All metals have the same specific heat capacity.
The heat capacity of the vessel of mass 100 kg is 8000 J/°K. Find its specific heat capacity.
Express the change in internal energy in terms of molar specific heat capacity.
Why is water used as a coolant in radiators of a car?
Match the following
| 1. | Specific heat capacity | a. | Dewar bottle |
| 2. | Calorimeter | b. | Lavoisier and Simon |
| 3. | Vacuum flask | c. | J Kg-1 K-1 |
| 4. | Ice – calorimeter | d. | Heat capacity |
