Advertisements
Advertisements
प्रश्न
A calorimeter is kept in a wooden box to insulate it thermally from the surroundings. Why is it necessary?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
The calorie is defined as 1 cal = 4.186 joule. Why not as 1 cal = 4 J to make the conversions easy?
Three bodies of the same material and having masses of m, m and 3m are at temperatures of 40°C, 50°C and 60°C respectively. If the bodies are brought in thermal contact, the final temperature will be:
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.
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 ______.
500 g of water and 100 g of ice at 0°C are in a calorimeter whose water equivalent is 40 g. 10 g of steam at 100°C is added to it. Then water in the calorimeter is ______.
(Latent heat of ice = 80 cal/g, Latent heat of steam = 540 cal/g)
Why is the inner vessel of a calorimeter made of copper?
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?
A calorimeter is designed to act like a thermos flask. Which feature of the calorimeter is primarily responsible for this thermal isolation?
