For an isolated system, `DeltaU=0`, what will be `Delta S`?

Explanation

For an isolated system, internal energy `(Delta U)= 0 and Q_("system") = 0, Q_("surr")= 0` W= 0, Entropy change for surrounding = 0
Entropy change for system = 0
Total entropy change = 0 (There no process given, so system is in a state).
`therefore Delta S= (Q"surr")/(T)` = 0
= 0 `(therefore Delta U= 0)`