Correct Answer - B
`DeltaH=100J`
Work done `PDeltaV=1.5(-6)` . Now, this work done is in litre atmosphere. To obtain the same in joules, multiply by `8.314` and divide by `0.0821`
`:. DeltaH=DeltaE+PDeltaV`
or, `100=DeltaE+(1.5(-6))/(0.0821)xx8.314`
or, `DeltaE=1011.4J`