Question
Question: Which one of the following would raise the temperature of 20 gm of water at 30<sup>0</sup>C most, wh...
Which one of the following would raise the temperature of 20 gm of water at 300C most, when added to water ? [specific heat of copper is 0.1 cal/gm00C]
A
20 gm of water at 400C
B
10 gm of water at 270C
C
1 kg of copper at 250C
D
4 gm of water at 800C
Answer
4 gm of water at 800C
Explanation
Solution
Heat available for raising the temperature is greatest in case (4).