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Find the heat energy required to boil 5 ...

Find the heat energy required to boil 5 kg of water iff its initial temperature is `30^(@)C` (specific heat of water is 4200 J `kg^(-1)" "k^(-1)` and boiling point is `100^(@)C`)

A

1680 kJ

B

1700 kJ

C

1720 kJ

D

1740 kJ

Text Solution

Verified by Experts

The correct Answer is:
A
`Q = msDelta T = 5 xx 4.2 xx 1000(100-20)= 1680 kJ.`
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