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A substance changes from its solid state...

A substance changes from its solid state to the liquid state when heat is supplied to it.
(a) Name the process.
(b) What name is given to heat observed by the substance.
(c) How does the average kinetic energy of molecules of the substnace change ?

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ICSE-CALORIMETRY-EXERCISE-11(B)
  1. (a) What do you understand by the change of phase of a substance ? ...

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  2. A substance changes from its solid state to the liquid state when heat...

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  3. A substance on heating, undergoes (i) a rise in its temperature, (ii) ...

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  4. How does the (a) average kinetic energy (b) average potential energy o...

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  5. State the effect of presence of impurity on the melting point of ice. ...

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  6. State the effect of increase of pressure on the melting point of ice.

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  7. The diagram in Fig. 11.8 below shows the change of phases of a substan...

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  8. 1 kg of ice at 0^@C is heated at a constant rate and its temperature i...

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  9. Explain the terms boiling and boiling point. How is the volume of wate...

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  10. How is the boiling point of water affected when some salt is added to ...

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  11. What is the effect of increase in pressure on the boiling point of a l...

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  12. Water boils at 120^@C in a pressure cooker. Explain the reason.

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  13. Write down the approximate range of temperature at which water boils i...

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  14. It is difficult to cook vegetables on hills and mountains. Explain the...

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  15. Complete the following sentences : When ice melts, its volume........

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  16. Complete the following sentences : Decrease in pressure over ice ....

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  17. Complete the following sentences : Increase in pressure .............

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  18. Complete the following sentences : A pressure cooker is based on t...

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  19. Complete the following sentences : The boiling point of water is d...

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  20. Complete the following sentences : Water can be made to boil at 11...

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