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Identify X in the following sequence of reactions :
$\mathrm{X}\underset{\left(\mathrm{ii}\right) {\mathrm{H}}^{+}/{\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{i}\right) {\mathrm{CH}}_3\mathrm{MgX}}{\to }}{\mathrm{C}}_5{\mathrm{H}}_{12}\mathrm{O}\underset{573 \mathrm{K}}{\overset{\mathrm{Cu}}{\to }}{\mathrm{C}}_5{\mathrm{H}}_{10}$
1. ${\mathrm{CH}}_3{\mathrm{COCH}}_2{\mathrm{CH}}_3$
2. ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{CHO}$
3. ${\left({\mathrm{CH}}_3\right)}_{2}CHCHO$
4. ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}$

$\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{I}\right) {\mathrm{CH}}_3\mathrm{MgI}}{\to }}X\stackrel{Cu/575 K}{\to }Y$
The compound Y in the above sequence is
1. 2-Methyl-2-phenyl-1-propanol
2. 2-Phenyl-2-propanol
3. Acetophenone
4. 2-Methyl-1-Phenyl-2-propanol

Which is more acidic?
1. o-cresol
2. p-nitrophenol
3. Phenol
4. m-cresol

Which among the following compounds is most acidic
in character :
1. HOH
2. CH₃OH
3. CH₃CH₂OH
4. ${\mathrm{CH}}_2-\underset{{\mathrm{CH}}_3}{\overset{\mathrm{OH}}{\underset{\left|}{\overset{\right|}{\mathrm{C}}}}}-{\mathrm{CH}}_3$

1-propanol and 2-propanol can be best distinguished
by:
1. Oxidation with alkaline KMnO₄ followed by
reaction with Fehling solution.
2. Oxidation with acidic dichromate followed by
reaction with Fehling solution
3. Oxidation by heating with copper followed by
reaction with Fehling solution.
4. Oxidation with conc. H₂SO₄
followed by reaction with Fehling solution

Identify (X) in the sequence :
$\underset{\left(\mathrm{X}\right)}{{\mathrm{C}}_3{\mathrm{H}}_8\mathrm{O}}\underset{H_{2}S{O}_4}{\overset{K_{2}C{r}_2{O}_7}{\to }}{C}_3{H}_{6}O\underset{warm}{\overset{I_2+NaOH}{\to }}CH{I}_3$
1. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2\mathrm{OH}$
2. ${\mathrm{CH}}_3-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_3$
3. ${\mathrm{CH}}_3-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$
4. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{CHO}$

${\mathrm{CH}}_3\mathrm{MgBr}+$$\stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\to }A\stackrel{HBr}{\to }B\stackrel{Mg/ether}{\to }C\underset{H_3{O}^{+}}{\overset{HCHO}{\to }}D$ is

In the following sequence of reactions
${\mathrm{CH}}_3-\underset{{\mathrm{NH}}_2}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_3\stackrel{{\mathrm{HNO}}_2}{\to }\mathrm{A}\stackrel{\mathrm{oxidation}}{\to }\mathrm{B}\underset{\left(\mathrm{ii}\right) {\mathrm{H}}^{+}/{\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{i}\right){\mathrm{CH}}_3\mathrm{MgI}}{\to }}\mathrm{C}$
The compound C formed will be
1. Butanol-1
2. Butanol-2
3. 2-Methylpropanol-1
4. 2-Methylpropan-2-ol

$\stackrel{{\mathrm{H}}^{+}/∆}{\to }A\left(major\right)$
The product ‘A’ is

R–CH₂–CH₂–OH can be converted into
R–CH₂–CH₂–COOH. The correct sequence of
reagents is
1. PBr₃, KCN, H₃O⁺
2. PBr₃, KCN, H₂
3. KCN, H₃O⁺
4. HCN, PBr₃, H₃O⁺

$\underset{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{{\mathrm{CH}}_3\mathrm{MgBr}\left(\mathrm{excess}\right)}{\to }}\left(X\right)$
What is X ?

$\underset{\mathrm{heat}}{\overset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\underset{major}{P}\stackrel{NBS}{\to }\underset{major}{Q}$
The structure of Q is?

$\stackrel{\mathrm{Lucas} \mathrm{Reagent}}{\to }A\left(\mathrm{Major}\right)$
The compound ‘A’ is

$\underset{\left(Predominant\right)}{\left(\mathrm{B}\right)}\stackrel{PB{r}_{\mathit{3}}}{\leftarrow }$$\stackrel{\mathrm{HBr}}{\to }\underset{\left(Predominant\right)}{\left(A\right)}$
(A) and (B) are respectively :

Which of the following is the strongest acid?
1. HC $\equiv$ CH
2. C₆H₆
3. C₂H₆
4. CH₃OH