Question

Steam is passed into 54 gm of water at 30⁰C till the temperature of mixture becomes 90⁰. If the latent heat of steam is 536 cal/gm, the mass of the mixture will be –

• A. 80gm
• B. 60 gm
• C. 50 gm
• D. 24 gm

Answer 1

Answer: (B)

60 gm

Answer 2

Steam [100⁰C] $\overset{\quad HeatLost\quad}{\rightarrow}$ water [100⁰C]

¾® water [90⁰] [Heat gain by water (water 30⁰ to)]