Properties Of Solids And Liquids Question 408

Question: A beaker contains 200 gm. of water. The heat capacity of the beaker is equal to that of 20 gm. of water. The initial temperature of water in the beaker is 20C . If 440 gm. of hot water at 92C is poured in it, the final temperature, neglecting radiation loss, will be nearest to

Options:

A) 58C

B) 68C

C) 73C

D) 78C

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Let the final temperature be T.

Then 200×1×(T20)+20×(T20) =440(92 - T) Solving it, we get T=68C. .



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