Question 3 :
The decreasing fugacity order of the following compounds is:<br>$i. Ph{SO}_{3}^{\ominus }$ &nbsp;<span>$ii. {C}_{2}{H}_{5}{SO}_{3}^{\ominus }$ &nbsp;<br>$iii. {C}_{2}{H}_{5}CO{O}^{\ominus }$ &nbsp;</span><span>$iv.&nbsp;\overset { \ominus &nbsp;}{ CN } $<br>$v.&nbsp;\overset { \ominus &nbsp;}{ OH } $<br></span>

Question 4 :
The decreasing basic order of the following is:<br/>$i. {Me}_{2}N-N{Me}_{2}$ &#160;&#160;<div>$ii. MeNH-NHMe$ &#160;</div><div>$iii. {H}_{2}N-{NH}_{2}$ &#160;&#160;</div><div>$iv. {NH}_{3}$</div>

Question 5 :
$0.16$ g of an organic substance was heated in carius tube and sulphuric acid formed was perecipitated as $BaSo_4$ and $BaCl_2$. The weight of the dry $BaSO_4$ was $0.35$ g. Find the percentage of sulphur.

Question 6 :
The decreasing nucleophilic order of the following compounds is:<br>$i. {NH}_{3}$ &nbsp;$ii. {PH}_{3}$ &nbsp; $iii. As{H}_{3}$ &nbsp; $iv. Sb{H}_{3}$

Question 7 :
The reaction intermediate produce by homolytic cleavage of bond is called.

Question 11 :
For the following,&#160;<span>the increasing order of nucleophilicity would be:</span><br/>(a) $I^{-}$&#160;<div>(b) $Cl^{-}$<br/>(c) $Br^{-}$<br/></div>

Question 13 :
In which of the following alcohols $C-O$ bond&#160;breaks (heterolytically) with the greatest ease is:<br/>

Question 15 :
Assertion : $RS^{\circleddash}$&nbsp;is a stronger nucleophile and a&nbsp;better leaving group than&nbsp;$RO^{\circleddash}$<br>Reason : $RS^{\circleddash}$&nbsp;is a weaker base than&nbsp;$RO^{\circleddash}$<br>

Question 17 :
The decreasing nucleophilic order of the following compounds is:<br>$i.&nbsp;\overset { \ominus &nbsp;}{ C } N&nbsp;$ &nbsp;$ii.&nbsp;\overset { \ominus &nbsp;}{ OH } $ &nbsp;$iii.&nbsp;\overset { \ominus &nbsp;}{ O } Me$ &nbsp;$iv.&nbsp;\overset { \ominus &nbsp;}{ { CH }_{ 3 } } $ &nbsp;<span>$v.&nbsp;{ H }^{ \ominus &nbsp;}$<br></span>

Question 20 :
<span>Cleavage of a chemical bond in a process where both of the electrons involved in the original bond formation remain with only one of the fragment species is called:</span><br/>

Question 23 :
Consider thiol anion $(RS^-)$ and alkoxy anion $(RO^-)$. Which of the following statement is correct?

Question 24 :
An organic compound '$A$' having molecular formula $C_{2}H_{3}N$ on reduction gave another compound $B$, upon treatment with nitrous acid '$B$' gave ethyl alcohol. On warming with chloroform and alcoholic $KOH$, it formed an offensive smelling '$C$'. The compound '$C$' is:<br/>

Question 25 :
Find out the correct order of rate of reaction towards allylic substitution.<div><br/>&#160;$(I)\ CH_{3} - CH = CH_{2}$&#160;</div><div><br/></div><div>$(II)\ CH_{3} - CH_{2} - CH = CH_{2}$&#160;</div><div><br/></div><div>&#160;$(III)\ CH_{3} - \underset {\underset {\displaystyle CH_{3}}{|}}{CH} - CH = CH_{2}$<div>.</div></div>

Question 27 :
The decreasing leaving group order of the following is:<br>$i.&nbsp;{ F }^{ \ominus &nbsp;}$ &nbsp;$ii.&nbsp;{Cl }^{ \ominus &nbsp;}$ &nbsp; $iii.&nbsp;{ Br }^{ \ominus &nbsp;}$ &nbsp;$iv.&nbsp;{ I }^{ \ominus &nbsp;}$<br>