Given below are two statements:Statement I: D | vedclass

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(A) Statement $I$ is true: Boiling point increases with an increase in molecular mass due to stronger van der Waals forces. Since the molecular mass o

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Both Statement $I$ and Statement $II$ are true

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(A) Statement $I$ is true: Boiling point increases with an increase in molecular mass due to stronger van der Waals forces. Since the molecular mass of $CH_3CH_2CH_2I$ $(170 	ext{ g/mol})$ > $CH_3CH_2I$ $(156 	ext{ g/mol})$ > $CH_3I$ $(142 	ext{ g/mol})$,the order is correct.Statement $II$ is true: $p$-dichlorobenzene is more symmetric than $o$-dichlorobenzene,which allows it to pack more efficiently in the crystal lattice,resulting in a higher melting point. However,boiling points are determined by intermolecular forces and molecular shape; $o$-dichlorobenzene has a higher dipole moment than $p$-dichlorobenzene,leading to stronger dipole-dipole interactions and a higher boiling point.

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Product $(A)$ in this sequence is:

The number of possible isomeric products formed when $3$-chloro-$1$-butene reacts with $HCl$ through carbocation formation is $.............$.

Complete the following reactions:
$(1)$ $1$-Chloropropane $\xrightarrow[{KOH}]{{\text{ethanol}}} (B)$ $\xrightarrow[{CCl_4}]{{Br_2}} (C)$
$(2)$ Ethane $\xrightarrow[{hv}]{{Cl_2}} (B)$ $\xrightarrow[{Na, \text{ether}}]{} (C)$

In the following reaction sequence,$X$ and $Z$,respectively,are:
$CH_{3}CH_{2}CH_{2}-OH + PCl_{5} \rightarrow CH_{3}CH_{2}CH_{2}Cl + X + HCl$
$CH_{3}CH_{2}CH_{2}Cl \xrightarrow{alc. KOH, \Delta} Y$
$Y \xrightarrow{HBr, (C_{6}H_{5}CO)_{2}O_{2}} Z$

Rank the following compounds in order of decreasing rate of $E_2$ reaction.

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