MCQ
Which one is liquid at room temperature :
- A$CH_3Cl$
- B$C_2H_5Cl$
- C$CH_3Br$
- ✓$C_2H_5Br$
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$\mathrm{C}\mathrm{H}_{3} -\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{O}-\mathrm{C}\left(\mathrm{CH}_{3}\right)_{3} \xrightarrow[\Delta]{{\mathrm{excess} \mathrm{HI}}} \mathrm{C}+\mathrm{D}$

$Ca{C_2}\xrightarrow{{{H_2}O}}A\mathop {\xrightarrow{{{\text{dil}}{\text{. }}{H_2}S{O_4}}}}\limits_{H{g^{ + + }}} B\mathop {\xrightarrow{{Ni}}}\limits_{{H_2}} C$