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There is 16 gm of pure water in a container at temperature – 20ºC. A small piece of ice is added to start crystallization. Amount of water in container when temperature reaches to 0ºC is(specific heat of water below 0°C is 1 cal/g ºC)

(A) 8gm 

(B) 10gm 

(C) 14gm 

(D) 12gm

1 Answer

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Correct option: (D) 12gm


Say y amount ice is formed finally 

16 (1)20 = y × 80

y = 16(1)20 / 80 = 4gm

Remaining water 12 gm

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