Consider the following statements:I. Chain and position isomerism is not possible for alkanes together.II. tautomerism is a chemical phenomenon which is catalysed by acid as well as base III. Tautomers are always metamers.IV. Tautomers are always functional isomers.Now Select the correct answer:

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Only III is correct

III and IV are correct

I,II and IV are correct

I, II and III are correct

answer is C.

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Detailed Solution

Tautomers are never metamers, they differ in chemical properties, they give different test. For example enol react with Na metal and neutral FeCl3.

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