A compound gives a positive test with I₂/NaOH and is extracted from benzene by saturated NaHSO₃, It may be :

Reactant (A) and (B) is:

${\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\mathrm{ll}}}{\mathrm{C}}-\mathrm{OH}\underset{∆}{\overset{\mathrm{Ca}{\left(\mathrm{OH}\right)}_2}{\to }}\left(\mathrm{A}\right)$

Product (A) is :

In which of the following compounds the methylenic hydrogens are the most acidic ?

$\mathrm{Ph}-{\mathrm{CH}}_3\stackrel{{\mathrm{CrO}}_2{\mathrm{Cl}}_2}{\to }\left(\mathrm{A}\right)\stackrel{\mathrm{conc}.\mathrm{KOH}}{\to }\mathrm{Ph}-{\mathrm{CH}}_2\mathrm{OH} + \left(\mathrm{B}\right)$

Product (B) of above the raction is :

Product (C) of the reaction is :

Product (A) and (C) is :

$\mathrm{Ph}-\stackrel{\stackrel{\mathrm{OH}}{\mathrm{l}}}{\mathrm{CH}}-{\mathrm{CH}}_3\stackrel{\mathrm{PCC}}{\to }\left(\mathrm{A}\right)\stackrel{{\mathrm{NH}}_2-\mathrm{NH}-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\mathrm{NH}}_2}{\to }\left(\mathrm{B}\right)$

Product (B) is :

(A) and (B) is differentiated by :

$$\begin{gathered} C{H}_2—C{H}_2—C{O}_{2}H \underset{BaC{O}_3}{\overset{∆}{\to }} A\stackrel{N{H}_2—N{H}_2}{\to } B\underset{KOH}{\overset{heat }{\to }}\left(C\right), \\ | \\ C{H}_2—C{H}_2—C{O}_{2}H \end{gathered}$$

Product (C) obtained is :

${\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-\mathrm{H}\stackrel{\mathrm{HCN}}{\to }\left(\mathrm{A}\right)\stackrel{{\mathrm{H}}_3{\mathrm{O}}^{\oplus }}{\to }\left(\mathrm{B}\right)\underset{△}{\to }\left(\mathrm{C}\right)\stackrel{{\mathrm{LiAlH}}_4}{\to }\left(\mathrm{D}\right)\stackrel{{\mathrm{HIO}}_4}{\to }\mathrm{HCHO} + \left(\mathrm{E}\right)$

Compound (C) can show geometrical isomerism, Product (E) of the reaction will be :

Arrange in their increasing order of equilibrium constants for hydraion ?

(a) A < B < C < D < E

$\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{CN}\underset{\underset{\left(3\right) {\mathrm{H}}_3{\mathrm{O}}^{\oplus }/∆}{\left(2\right){\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-\mathrm{Cl}}}{\overset{\left(1\right)\mathrm{EtONA}}{\to }}$ (P); Product (p) of the reaction will be :

$\underset{\mathrm{Symmetrical} \mathrm{ketone}}{\left(\mathrm{A}\right)} \stackrel{{\mathrm{LiAlH}}_4}{\to }\left(\mathrm{B}\right)\underset{∆}{\overset{{\mathrm{H}}^{\oplus }}{\to }}$Diastereomers Reactent (A) is :

Molecular weight of compound (A) is:

Product (B) is:

This conversion can be achieved by :

Which of the following is the correct order of decarboxylation of $\mathrm{\beta }$-keto carboxylate anion ?

 + ${\mathrm{CH}}_3-{\mathrm{NH}}_2$$\to$ Product of the reaction is :

Which $\mathrm{\beta }$-keto acid shown will not undergo decarboxylation ?

${\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-\mathrm{H}\stackrel{{\mathrm{HO}}^{-}/∆}{\to }$ ($\underset{73\%}{\mathrm{A}}$) Product (A) is:
                                                                                                                               

$\mathrm{Ph}-\mathrm{CH}=\mathrm{CHCHO} + {\mathrm{CH}}_3\mathrm{CH}=\mathrm{CHCHO}\underset{\mathrm{ErOH}, ∆}{\overset{\mathrm{base}}{\to }}$ (A) 87%; product of this reaction is :

CH₃CHO$\underset{5°\mathrm{C}}{\overset{10\%\mathrm{NaOH}}{\to }}\underset{∆}{\to }\underset{\mathrm{Ni}}{\overset{{\mathrm{H}}_2}{\to }}$$$(A) ; Product (A) of the reaction is :

$A \underset{2. ∆}{\overset{1. dil NaOH}{\to }}$

Reactant (A) is?

1.${\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\left({\mathrm{CH}}_2\right)}_5-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\mathrm{CH}}_3$

2.${\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\left({\mathrm{CH}}_2\right)}_4-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\mathrm{CH}}_3$

3.$\mathrm{H}-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\left({\mathrm{CH}}_2\right)}_5-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-\mathrm{H}$

4.${\mathrm{CH}}_3-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-{\left({\mathrm{CH}}_2\right)}_4-{\mathrm{CH}}_2-\mathrm{OH}$

The reaction,

Compare enolate A with enolate B.

Which of the following statements is true?

$\stackrel{\mathrm{PCC}}{\to }\left(\mathrm{A}\right) \underset{∆}{\overset{\mathrm{dil}. \mathrm{NaOH}}{\to }}\left(\mathrm{B}\right)$

Product (B) is:

Identify the principal product of the following reaction?

$\underset{\mathrm{ethanol}, \mathrm{water}, \mathrm{heat}}{\overset{\mathrm{NaOH}}{\to }}{\mathrm{H}}_2\mathrm{O} +?$