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Question

The best method to prepare cyclohexene from cyclohexanol is by using :

A
conc. H3PO4
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B
conc. HCl+ZnCl2
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C
HBr
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D
conc. HCl
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Solution

The correct option is D conc. H3PO4
The best method to prepare cyclohexene from cyclohexanol is by using conc. H3PO4.

We can also use conc. sulphuric acid or alumina. A molecule of water is lost and C=C double bond is formed.

Hence the correct option is A.

828897_508484_ans_e466ac29358c4d4d9eee47330e1d40bf.png

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