This question is multicorrect please answer as soon as possible thanks

The answer would be 4^th option as c3h8 on heating gives co2 and h2o both being in the gaseous state.We would at a tussle between the 3^rd option and 4^th option...as both are giving gases.1st and 2^nd options are ruled out as they are forming solids... which have less entropy.In the 3^rd option,cl2 and pcl3 give rise to pcl5 which is a gas but they are associating together...which would mean lesser entropy than that in the fourth option...which is heating of c3h8 which implies breaking down of the existing c-c bonds and forming new products which Are co2 and h2o .Hence I would go with the fourth one 

Hope this would help u

 

 

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