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Total heat required to convert 50 kg of ...

Total heat required to convert 50 kg of water at `10^(@)C` to steam at `100^(@)C (L.H =2.25 xx 10^(6)" J kg"^(-1))`:

A

`3.13xx10^(6) cal`

B

`31.3 xx10^(6) cal`

C

`313 k cal`

D

`31.3 k cal`

Text Solution

Verified by Experts

The correct Answer is:
B
Here `Q=Cm Delta Q +ml`
`1000 xx50 xx(100-10)+(50xx2.25xx10^(6))/(4.2)`
`=4.5xx10^(6)+26.8xx10^(6)=31.3xx10^(6)` cals.
`therefore` Correct choice is (b).
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