$\mathrm{Ph}-\mathrm{CH}=\mathrm{CHCHO}<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>{\mathrm{CH}}_3\mathrm{CH}=\mathrm{CHCHO}\underset{\mathrm{ErOH},<mspace\; width="1em"></mspace>∆}{\overset{\mathrm{base}}{\to }}$ (A) 87%; product of this reaction is :

1. $\mathrm{Ph}-{\left(\mathrm{CH}=\mathrm{CH}\right)}_2-\mathrm{CHO}$

2. $\mathrm{Ph}-{\left(\mathrm{CH}=\mathrm{CH}\right)}_3\mathrm{CHO}$

3. $\mathrm{Ph}-{\left(\mathrm{CH}=\mathrm{CH}\right)}_4\mathrm{CHO}$

4. $\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_3$

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 :

(1) Propanol

(2) ethanol

(3) butanol

(4) pentanol

$A<mspace\; width="1em"></mspace>\underset{2.<mspace\; width="1em"></mspace>∆}{\overset{1.<mspace\; width="1em"></mspace>dil<mspace\; width="1em"></mspace>NaOH}{\to }}$

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?

1. A is more stable than B                               
2. A and B have the same stability
3. B is more stable than A                               
4. No comparison of stability can be made

$\stackrel{\mathrm{PCC}}{\to }\left(\mathrm{A}\right)<mspace\; width="1em"></mspace>\underset{∆}{\overset{\mathrm{dil}.<mspace\; width="1em"></mspace>\mathrm{NaOH}}{\to }}\left(\mathrm{B}\right)$

Product (B) is:

1.    
2.      
3.    
4.  

Identify the principal product of the following reaction?

$\underset{\mathrm{ethanol},<mspace\; width="1em"></mspace>\mathrm{water},<mspace\; width="1em"></mspace>\mathrm{heat}}{\overset{\mathrm{NaOH}}{\to }}{\mathrm{H}}_2\mathrm{O}<mspace\; width="1em"></mspace>+?$
1.                               
2.

3.      
4.

The enolate ion that reacts with 3-buten-2-one to form (Y) is :

(a)          (b)          (c)           (d) 

$\underset{∆}{\overset{\mathrm{base}}{\to }}$ (A), (A) + $\underset{∆}{\overset{{\mathrm{HO}}^{-}\left(\mathrm{dil}\right)}{\to }}$(B)

Product (B) in the above reaction is :

(a)                         (b) 

(c)                                      (d) 

Which of the following compounds will not undergo Cannizaro reaction, when treated with 50% aqueous alkali?

(a)     $<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>O$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left|\right|$
$Ph-C-H$ (b)       (c) ${\mathrm{Me}}_3\mathrm{C}-\mathrm{CHO}$          (d) $\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{CHO}$