Properties Of Solids And Liquids Question 430
Question: In an energy recycling process, $ 100g $ of steam at $ 100{}^\circ C $ becomes water at $ 100{}^\circ C $ which converts y g of ice at $ 0{}^\circ C $ into water at $ 100{}^\circ C $ . The numeric value of y is
Options:
A) 100
B) 200
C) 300
D) 400
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Specific heat of water = 4200 J/kg-K .
Latent heat of fusion $ =3.36\times 10^{5} J/kg $ .
Latent heat of vapourisation $ =22.68\times l0^{5} J/kg $
$ x\times 1{{0}^{-3}}\times 22.68\times 10^{5}J $
$ =y\times 1{{0}^{-3}}\times 3.36\times 10^{5} J+y\times 1{{0}^{-3}}\times 4200\times 100 $
$ \therefore \frac{x}{y}=\frac{7.56}{22.68}=\frac{1}{3} $
