Types of Tautomerism

 Nitro-acinitro Tautomerism shown by?

Which of the two tautomers is more stable?

The final product $\left(\mathrm{C}\right)$is :

Cotyledons are also called-

After prolonged treatment of $\mathrm{A}$ by ${\mathrm{D}}_2\mathrm{O}/\mathrm{D}{\mathrm{O}}^{-}$, the maximum possible difference in molecular weights of compound $\mathrm{A}$ and  $\mathrm{B}$ observed is

Identify the product when cyclopentanone undergoes reaction with ${\mathrm{D}}_2\mathrm{O}$ and $\mathrm{K}\mathrm{O}\mathrm{D}$.

The number of different types of enol tautomers possible for 3-hexanone are

The tautomerism involving (1, 5) migration of hydrogen atom can be observed in

  

What is the relation between the following compounds?