UNIT 8:

Thermal Properties of Matter...
Numerical Problems...

Numerical No: 8.1,8.2,8.3,8.4,8.5,8.6,8.7,8.8,8.9,8.10,

NUMERICAL NO: 8.1

• Temperate of water in a beaker is 50^oC. What is value in fahrenheit scale?


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NUMERICAL NO: 8.2

• Normal human body temperature is 98.6^oF. Convert it into Celsius scale and Kelvin scale.


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NUMERICAL NO: 8.3

• Calculate the increase in length of an aluminium bar 2 m long when heated from 0^oC to20^oC. If the thermal coefficient of linear expansion of aluminium is 2.5 x 10^-5 K^-1.


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NUMERICAL NO: 8.4

• A baloon contains 1.2 m³ air at 15^oC. Find its volume at 40^oC. Thermal coefficient of volume expansion of air is 3.67 x 10^-3 K^-1.


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NUMERICAL NO: 8.5

• How much heat is required to increase the temperature 0f 0.5 kg of water from 10^oC to 65^oC.


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NUMERICAL NO: 8.6

• An elector heater supplies heat at the rate of 1000 Js^-1. How much time is required to raise the temperature of 200 g of water from 20^oC to 90^oC.


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NUMERICAL NO: 8.7

• How much ice will melt by 50000 J of heat. Latent heat of fusion of ice = 336000 Jkg^-1.


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NUMERICAL NO: 8.8

• Find the quantity of heat needed to melt 100g of ice at -10^oC into water at 10^oC.


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NUMERICAL NO: 8.9

• How much heat is required to change 100 g of water at 100^oC into steam? (Latent heat of vaporization of water is 2.26 x 10⁶ Jkg^-1)


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NUMERICAL NO: 8.10

• find the temperature of water after passing 5 g of steam at 100^oC through 500 g of water at 10^oC. (Note: specific heat of water is 4200Jkg^-1 K^-1, latent heat of vaporization of water is 2.26 x 10⁶ Jkg^-1).


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