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If specific heat of a substance is infin...

If specific heat of a substance is infinite, it means

A

Heat is given out

B

Heat is taken in

C

No change in temperature takes whether heat is taken in or given out

D

All of the above

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The correct Answer is:
C
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How much heat (in joule) is required to raise the temperature of 205 g of water from 21.2^(@)C to 91.4^(@)C . Specific heate of water is 4.18 J g^(-1) .^(@)C^(-1) Strategy : The specific heat of a substance is the amount of heat required to raise the temperature of 1g of the substance by 1^(@C . Thus Specific heat = (("Amount of heat in joules"))/(("Mass of substance in grams")("Temperature change in" .^(@)C)) Rearrangement gives. Amount of heat (q) = Mass of substance (m) xx Specific heat (c ) xx Temperature change (Delta T)

Assertion : Specific heat of any substance remains constant at all temperatures. Reason : It is given by s= 1/m * (dQ)/(dt) .

If specific heat capacity of a substance in solid and liquid is proportional to the temperature of substance, then temperature Vs time plot for the substance is best present by [Assume heat is supplied to substance at constant rate and initial temperature is less than melthing pint of substance.

ERRORLESS -THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY -Calorimetery
  1. When vapour condenses into liquid

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  2. At NTP water boils at 100^(@)C . Deep down the mine, water will boil a...

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

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  4. A gas in an airtight container is heated from 25^(@)C to 90^(@)C. The...

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  5. The amount of heat required to change the state of 1 kg of substance a...

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  6. The latent heat of vaporization of a substance is always .

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  7. When an ideal gas undergoes an adiabatic change causing a temperature ...

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  8. 540 g of ice at 0^(@)C is mixed with 540 g of water at 80^(@)C. The fi...

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  9. Water is used in car radiators as coolant because

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  10. How much heat energy is gained when 5 kg of water at 20^(@)C is brough...

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  11. Assertion : The melting point of ice decreases with increase of pressu...

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  12. 1 gm of ice at 0^@C is converted to steam at 100^@C the amount of heat...

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  13. 80 g of water at 30^@C are poured on a large block of ice at 0^@C. The...

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  14. The saturation vapour pressure of water at 100^(@)C is

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  15. Two spheres A and B have diameters in the ratio 1:2, densities in the ...

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  16. Work done in converting 1 g of ice at -10^@C into steam at 100^@C is

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  17. If mass-energy equivalence is taken into account, when water is cooled...

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  18. Compared to a burn due to water at 100^(@)C , a burn due to steam at 1...

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  19. 50 gm of copper is heated to increase its temperature by 10^(@)C. If t...

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  20. Two liquid A and B are at 32^@C and 24^@C. When mixed in equal masses ...

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