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प्रश्न
A calorimeter is kept in a wooden box to insulate it thermally from the surroundings. Why is it necessary?
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उत्तर
A calorimeter is kept in a wooden box to insulate it thermally from the surroundings because in order to determine the specific heat capacity, the total heat transferred must be known. Heat must not be exchanged with the surroundings, otherwise the principle of calorimeter would not stand valid.
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संबंधित प्रश्न
Refer to the plot of temperature versus time (figure) showing the changes in the state of ice on heating (not to scale).
- The region AB represents ice and water in thermal equilibrium.
- At B water starts boiling.
- At C all the water gets converted into steam.
- C to D represents water and steam in equilibrium at boiling point.
On an X temperature scale, water freezes at -125°X and boils at 375°X. On a Y temperature scale, water freezes at -70°Y and boils at -30°Y. The value of temperature on X scale is ______ on which value of temperature on y Scale becomes 50° Y.
A copper block of mass 2.5 kg is heated in a furnace to a temperature of 500°C and then placed on large ice block. The maximum amount of ice that can melt is ______.
(Specific heat of copper = 0.39 Jg-1 c-1, latent heat of 0 fusion of water = 335 Jg-1)
80 gm of water at 30°C is poured on a large block of ice at 0°C. The mass of ice that melts is ______.
Work done in converting one gram of ice at -10°C into steam at 100°C is ______.
The specific heat of a substance is given by C = a + bT, where a = 1.12 kJ kg-1K-1 and b = 0.016 kJ-kg K-2. The amount of heat required to raise the temperature of 1.2 kg of the material from 280 K to 312 K is ______.
What does the word "calorimetry" mean?
The principle of calorimetry is based on which law?
What is the purpose of the outer jacket and air gap in a calorimeter?
In the method of mixtures, why should the hot sample be transferred quickly into the calorimeter?
What is the role of the stirrer in a calorimetry experiment?
The specific heat capacity of water is approximately ______.
Why is water commonly used as the liquid in a calorimeter?
In a calorimetry experiment, the numerator of the specific heat formula (m2s2 + m3s3)(T − T2) represents ______.
