MCQ
Which of the following compound has maximum boiling point
- ✓$n- $ hexane
- B$n- $ pentane
- C$2, 2- $ dimethyl propane
- D$2- $ methyl butane
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Statement $I$: In group $13$, the stability of $+1$ oxidation state increases down the group.
Statement $II$: The atomic size of gallium is greater than that of aluminium.
In the light of the above statements, choose the most appropriate answer from the options given below:

Assertion $(A)$: Cis form of alkene is found to be more polar than the trans form
Reason $(R)$: Dipole moment of trans isomer of $2$-butene is zero.
In the light of the above statements, choose the correct answer from the options given below :
$\left[\right.$ Given $\left.\mathrm{R}=8.314 \,\mathrm{JK}^{-1} \,\mathrm{~mol}^{-1}\right]$