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प्रश्न
Fill in the following blank using suitable word:
The normal temperature of a human body is .............
उत्तर
The normal temperature of a human body is 37°C.
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संबंधित प्रश्न
(a) Calculate the heat capacity of a copper vessel of mass 150g if the specific heat capacity of copper is `410 J kg^-1 K^-1`
(b) How much heat energy will be required to increase the temperature of the vessel in part (a) from 25°C to 35°C?
The melting point of naphthalene, a crystalline solid is 80℃ and the room temperature is 30℃. A sample of liquid naphthalene at 100℃ is cooled down to the room temperature. Draw a temperature time graph to represent this cooling.
(i) Name the physical quantity which is measured in calories.
(ii) How is calorie related to the S.I. unit of that quantity ?
Write the SI unit of:
(i) Amount of heat
(ii) Heat capacity
(iii) Specific Heat capacity
40 g of ice at -16°C is dropped into water at 0°C, when 4 g of water freezes into ice. If specific heat capacity of ice is 2100 J/kg°C, what will be the latent heat of fusion of ice?
What energy change would you Expect to take place in the molecules of a substance when it undergoes:
(i) a change in its temperature?
(ii) a change in itsstate without any change in its temperature?
A copper calorimeter of mass 50g contains 100g of water at 20°C. A metallic piece of mass 250 g is heated to 100°C and is then dropped into the calorimeter. The contents of the calorimeter are well stirred and its final highest temperature is recorded to be 28 °C. If the specific heat capacity of water is 4.2 J/g°C and of copper is 0.4 J/g°C, find:
(i) the heat gained by water,
(ii) the heat gained by calorimeter,
(iii) total heat supplied by the metal piece, and
(iv) the specific heat capacity of metal.
Name the material used for making a Calorimeter.
