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"cal.g"^(-1).^(@)C^(-1) is unit of...

`"cal.g"^(-1).^(@)C^(-1)` is unit of

A

specific heat capacity

B

thermal capacity

C

water equivalent

D

latent heat

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The correct Answer is:
A
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An alloy contains 60% copper and 40% nickel. A piece of this alloy of mass 50 g is heated to 50^(@)C and than dropped into a calorimeter of water equivalent 10 g containing 40 g of water at 20^(@)C . Calculate the final temperature of the mixture. Specific heat of copper ="0.09 cal.g"^(-1).^(@)C^(-1) , and of nickel = "0.11 cal.g"^(-1).^(@)C^(-1)

Thermal capacities of mercury and glass of the same volume are equal. Densities of mercury and glass are "13.6 g.cm"^(-3) and "2.5 g.cm"^(-3) respectively. If the specific heat capacity of mercury is "0.03 cal.g"^(-1).^(@)C^(-1) . Find that of glass.

'Specific heat of iron is "0.106 cal.g"^(-1).^(@)C^(-1) '- what do you mean by this statement?

An iron of mass 10 g and of specific heat "0.1 cal.g"^(-1).^(@)C^(-1) is heated in a furnace and quickly transferred to a thick - walled copper vessel of mass 200 g and of specific that "0.09 cal.g"^(-1).^(@)C^(-1) , kept at 50^(@)C . The vessel along with its contents, is placed in a calorimeter of water equivalent 20g, containing 180 g water at 20^(@)C . A thermometer dipped in the water of the calorimeter shows the maximum temperature to be 26^(@)C . Find the temperature of the furnace. Will there be any local boiling of water in the calorimeter?

Specific heat capacity of aluminium is "0.21 cal.g"^(-1).^(@)C^(-1) . What will be the thermal capacity and water equivalent of an aluminium strip of mass 200 g?

A liquid at 25^(@)C , of specific heat "0.48 cal. G"^(-1).^(@)C^(-1) , is mixed with another liquid at 10^(@)C of specific heat "0.36 cal. g"^(-1).^(@)C . If the final temperature of the mixture is 20^(@)C , find the mass ratio of the two liquid in the mixture.

Mass of object is 200g and its specific heat is "0.09 cal. g"^(-1).^(@)C^(-1) . How much that heat is required to increase its temperature from 20^(@)C to 90^(@)C ?

A body of mass 100 g is heated up to 122^(@)C and dropped quickly in water of mass 300 g kept at 28^(@)C in a copper calorimeter of mass 50 g. The final temperature of the mixture becomes 30^(@)C. If the specific heat of copper is "0.09 cal.g"^(-1).^(@)C^(-1) , find the specific heat of the material of the body.

A piece of platinum of mass 200 g, is heated for a sufficiently long time in a furnace and dropped quickly in 650 g of water at 10^(@)C , kept in a container of water equivalent 50g. Final temperature of the mixture becomes 25^(@)C . If the specific heat capacity of platinum is "0.03 cal.g"^(-1).^(@)C^(-1) , find the temperature of the furnace.

50 g of an alloy containing 80% copper and 20% silver is heated up to t_(1)=80^(@)C and then dropped in a calorimeter of water equivalent W = 10 g containing m = 90 g of water at t_(2)=20^(@)C . What will be the final temerature of the mixture ? Specific heat capacity of copper and silver are s_(c)=0.09" cal.g"^(-1).^(@)C^(-1) and s_(s)="0.15 cal.g"^(-1).^(@)C^(-1) respectively.

CHHAYA PUBLICATION-CALORIMETRY-EXERCISE (Multiple Choice Questions)
  1. Mean calorie means

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  2. If the amount of heat required by mass m of a substance for a substanc...

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  3. "cal.g"^(-1).^(@)C^(-1) is unit of

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  4. Which of the following substances has highest specific heat?

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  5. Due to higher specific heat of water compared to other solids and liqu...

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  6. To cool down the engine of a car, water is used in the radiator becaus...

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  7. During boiling of water at 100^(@)C, what will be its specific heat?

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  8. If the temperature of 1 g of water is raised by 1^(@)C for what initia...

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  9. An alternative name of 'mean calorie' is

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  10. The temperature erange and pressure, at which the heat required by 1 g...

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  11. 10 g of water is supplied with 420 J of energy. The rise in temperatur...

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  12. If specific heat of a substance is infinite, it means

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  13. Calorimeters are made of which of the followings?

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  14. Mass m of a substance requires an amount H of heat for a rise t in tem...

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  15. Thermal capacity of a body of mass 10 g is "8 cal ".^(@)C^(-1). The sp...

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  16. If the specific heat of copper is "0.1 cal. G"^(-1).^(@)C^(-1), then w...

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  17. The ratio of the radii of two spheres made of the same material 1:4. T...

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  18. The ratio of the densities of two materials is 5:6 and of their specif...

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  19. When two bodies at different temperatures are brought in contct, the b...

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  20. If no change of state occurs, which of the following quantities is not...

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