Write the reactions of Ethylene with the following :
(a) Ozone `" "` b) Cold, dilute alk, `KMnO_(4)`

Explanation

With cold dil alk. `KMnO_(4)`: Ethylene reacts with cold dil.alk.
`KMn_(4)` at 273 K and forms ethylene glycol
`underset("ethylene")(H_(2)C=CH_(2))underset("alk." KMnO_(4))overset("Cold. dil")(to)underset("ethylene glycol")(CH_(2)OH-CH_(2)OH)`
This reaction is used to detect carbon -carbon double bond or triple bond and is known as Baeyer.s test.