Answers

2016-03-28T22:57:50+05:30
Heat evolved by the system = q−q− (negative)
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2016-03-28T23:06:22+05:30
Heat evolved/released(System) = - Heat evolved/released(Surrounding)
Therefore it is negative.

So if you consider one thing (say System) to be of positive sign convention then other thing (Surrounding) becomes negative in sign convention.
1 5 1
sry...
i have edited my ans...
indian?
yeah...
this is brainly indian?