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When…… is used as the deydrating agent, ...

When…… is used as the deydrating agent, the yield of `1`-alkenes from `2`-alcohols (such as butan`-2`-ol)is generally above `98%`.

A

`H_(2)SO_(4)`

B

`H_(3)PO_(4)`

C

`Al_(2)O_(3)`

D

`ThO_(2)`

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Verified by Experts

The correct Answer is:
D
Thorium oxide or lanthanide metal oxides are used for this purpose.
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