Properties Of Solids And Liquids Question 71
Question: 5 g of ice at 0°C is dropped in a beaker containing 20 g of water at 40°C. The final temperature will be [Pb. PET 2003]
Options:
A) 32°C
B) 16°C
C) 8°C
D) 24°C
Show Answer
Answer:
Correct Answer: B
Solution:
For water and ice mixing $ {\theta _{\text{mix}}}=\frac{m _{W}{\theta _{W}}-\frac{{m _{i}}{L _{i}}}{c _{W}}}{{m _{i}}+m _{W}} $
$ =\frac{20\times 40-\frac{5\times 80}{1}}{5+20}=16{}^\circ C $
