Which of the following statements is not correct?

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The molecule Question Image is cleaved by ${HIO}_{4}$ giving RCHO and R'CHO.

Tertiary butyl alcohol when passed over hot metallic Cu at 570 K produces isobutene.

Tertiary alcohols are more readily dehydrated than the secondary alcohols.

Primary alcohols do not show positive Lucas test.

answer is A.

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Detailed Solution

(a) The molecule does not contain —OH groups attached to adjacent carbon atoms.

(b) Tertiary alcohol gives 3° carbocation and secondary alcohol gives 2° carbocation. Since 3° carbocation is more stable than 2° carbocation, it is formed more readily.

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