Which of the following reagents can distinguish ethyl methyl either from isopropyl alcohol ?

Which of the following reagents can distinguish ethyl methyl either from isopropyl alcohol ?
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Which of the following reagents can distinguish ethyl methyl either from isopropyl alcohol ? A. `Br_(2)CCl_(4)` B. ` ... ` D. `CuCl//NH_(4)^(+)OH^(-)`
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Name two reagents which can be used to distinguish between ethene and ethyne.

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