MCQ
If liquids $A$ and $B$ form an ideal solution
- AThe free energy of mixing is zero
- BThe free energy as well as entropy of mixing are zero
- ✓Enthalpy of mixing is zero
- DThe entropy of mixing is zero
$a) \,V_{\text {mix }}=0$
$b) \,H _{\text {mix }}=0$
$c) \,\Delta G _{\operatorname{mix}}=- ve$
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Statement $(I)$ : A $\pi$ bonding $MO$has lower electron density above and below the inter-nuclear asix.
Statement $(II)$ : The $\pi^*$ antibonding $MO$ has a node between the nucles.In the light of the above statements, choose the most appropriate answer from the options given below:

$(a)\,\,B\,\,\,\,\,\,\,\,\,\,(b)\,\,Mg\,\,\,\,\,\,\,\,\,\,\,\,(c)\,\,Li\,\,\,\,\,\,\,\,\,\,\,\,(d)\,\,Al\,\,\,\,\,\,\,\,\,\,\,(e)\,\,K$