Statement I : If one gram of ice is mixed with 1 g of water at $80^{0} C$ , then the final temperature of mixture is zero.
Statement II : Latent heat of ice $80^{0} C$ cal/g.

Easy

A

If both statement I and statement II are true and statement II is the correct explanation of statement I.
B

If both statement I and statement II are true but statement II is not the correct explanation of statement I.
C

If statement I is true but statement II is false
D

If both statement I and statement II are false

Solution

Heat required by ice to melt
= 1 $\times$ 80 = 80 cal
Heat lost by water in cooling from $80^{0} C to 0^{0} C$
= $1 \times 1 \times (80 - 0) = 80 cal$
From principle of calorimetry,
Heat lost = Heat gained
Thus, the final temperature of mixture will be $0^{0} C$ .

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