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A piece of ice is heated at a constant r...

A piece of ice is heated at a constant rate. The variation in temperature with time of heating is shown in the graph in Fig. 11.6.
(i) What is represented by the part AB ?
(ii) What does the part CD represent ?
(iii) What conclusion do you draw regarding the nature of ice from the graph ?

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(i) The part AB represents melting of ice at `0^@`C.
(ii) The part CD represents boiling of water at `100^@`C.
(iii) The ice initially is in solid state at `-10^@`C. On heating, its temperature rises to `0^@`C. It then takes some heat energy at `0^@`C to melt in water at `0^@`C which is called its latent heat.
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ICSE-CALORIMETRY-EXERCISE-11(B) (NUMERICALS)
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  4. A molten metal of mass 150 g is kept at its melting point 800^@C. When...

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  5. A solid metal weighing 150 g melts at its melting point of 800^(@)C by...

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  6. A refrigerator converts 100 g of water at 20^@C to ice at - 10^@C in 7...

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  7. In an experiment, 17 g of ice is used to bring down the temperature of...

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  8. The temperature of 170 g of water at 50^@C is lowered to 5^@C by addin...

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  9. Find the result of mixing 10 g of ice at -10^@C with 10 g of water at ...

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  10. A piece of ice of mass 40 g is added to 200 g of water at 50^@C. Calcu...

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  11. Calculate the mass of ice needed to cool 150 g of water contained in a...

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  12. 250 g of water at 30^(@)C is present in a copper vessel of mass 50 g. ...

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  13. How much boiling water at 100^@C is needed to melt 2 kg of ice so that...

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  14. Calculate the total amount of heat energy required to convert 100 g of...

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  15. The amount of heat energy required to convert 1 kg of ice at -10^@C to...

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  16. 200 g of ice at 0^@C converts into water at 0^@C in 1 minute when heat...

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