Read the passage given below and answer the questions from 38-40: Tautomerism Structural isomers....
0Read the passage given below and answer the questions from 38-40:
\( \mathrm{P} \)
Tautomerism
Structural isomers that undergo rapid interconversions and exist in dynamic equilibrium are known as Tautomers and relationship between then is known Tautomerism. Tautomers generally have different functional groups. At equilibrium more stable tautomers is present in higher amount but the ratio remains same until and unless change is make externally. Tautomerism actually arises due to rapid oscillation of an atom between two polyvalent atoms in a molecule.
Above is an example of Keto-enol tautomerism. Conditions for this type of keto enol tautomerism is presence of \( -\mathrm{H} \). Amount of enol at equilibrium is known as enolic content. It is more if enol is more stable and less if keto is more stable.
Tautomer of which of the following can show geometrical isomerism.
(1) \( \mathrm{CH}_{3}-\mathrm{CHO} \)
(2) \( \mathrm{CH}_{3} \mathrm{CH}_{2}-\mathrm{CHO} \)
(3) \( \left(\mathrm{CH}_{3}\right)_{2} \mathrm{CH}-\mathrm{CH}=\mathrm{O} \)
(4)
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