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Question

In an energy recycling process, X g of steam at 1000C becomes water at 1000C which converts Y g of Ice at 00C into water at 1000C . The ratio of X/Y will be

A
13
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B
23
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C
3
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D
2
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Solution

The correct option is A 13
X(g)X(g)steamat1000Cwaterat00CY(g)Y(g)Y(g)iceat00Cwaterat00Cwaterat1000CReleasedEnergy=mLθ=540XRequiredEnergy=mLf+msΔT=Y(80)+Y(1)100=180Y540X=180YXY=13
Hence, Option A is correct.

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