Write a stable resonating structure for each of the following compound:

${\mathrm{CH}}_2=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-\mathrm{C}\equiv \mathrm{N}$

Write a stable resonating structure for each of the following compound:

Write a stable resonating structure for the following compound:

Write a stable resonating structure for each of the following compound:

Relative stabilities of the following carbocations will be in order.

Arrange the following carbanions in increasing order of their stability with reason.

${\left({\mathrm{CH}}_3\right)}_2\stackrel{}{\stackrel{-}{C}H}, {\mathrm{CH}}_3{\stackrel{}{\stackrel{-}{C}H}}_2, {\left({\mathrm{CH}}_3\right)}_3\overline{\mathrm{C}}, {\stackrel{}{\stackrel{-}{C}H}}_3$

Which has highest percentage of enol content in the solution phase? Write the structure of enol of that compound.

(a) Acetone

(b) Acetophenone

(c) Acetic acid 

(d) Acetyl acetone

Which of the following will show tautomerism?

(P) $\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{CHO}$

(Q) 

(R) 

(S) ${\mathrm{CH}}_2=\mathrm{CH}-\mathrm{OH}$