Question

If there is no heat loss, the heat released by the condensation of x gram of steam at `100^@C` into water at `100^@C` can be used to convert y gram of ice at `0^@C` into water at `100^@C`. Then the ratio of y:x is nearly [Given `L_l = 80 cal//gm` and `L_v= 540 cal//gm`]
A. `1:1`
B. `2:1`
C. `3:1`
D. `2.5:1`

Answer 1

Correct Answer - C
By symmetry
`I_(AB)=I_(BC)` and `I_(AD)=I_(DC)`
`:.` No current in BO and OD
`:. T_(B)=T_(o)=T_(D)`