Advertisements
Advertisements
प्रश्न
How is the transference of heat energy by radiation prevented in a calorimeter?
उत्तर
The outer and inner vessels of a calorimeter are highly polished to prevent the transference of heat energy by radiation.
APPEARS IN
संबंधित प्रश्न
How can a temperature in degree Celsius be converted into S.I. unit of temperature?
Name the law on which the principle of mixture is based.
200 g mass of certain metal of 83°C is immersed in 300 g of water at 30°C the final temperature
is 33°C. Calculate the specific heat capacity of the metal Assume that the specific heat capacity
of water is `4.2 J g^-1K^-1`
The amount of heat energy required to convert 1 kg of ice at – 10℃ to water at 100℃ is 7,77,000 J. Calculate the specific latent heat of ice. Specific heat capacity of ice = 2100 J kg-1K-1, Specific heat capacity of water = 4200 J kg-1 K-1.
A mass of 200 g of mercury at 100°C is poured into water at 20°C. If the final temperature of the mixture is 25°C, find the mass of water. (Sp. heat cap. of mercury is 140 J/kgK).
A refrigerator converts 100 g of water at 20°C to ice at -10°C in 73.5 minutes. Calculate the average rate of heat extraction from water in watt. (Sp. heat of ice= 2100 J/kgK, sp. heat of water = 4200 J/kgK, Sp. latent heat of ice = 336000 J/kg.)
Fill in the following blank using suitable word:
Whenever mechanical work is done, .......... Is produced.
Which contains more heat: 1 G water at 100°C or 1 g steam at 100°C? Give reason.
State two impacts of global warming on the life on earth.