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Question

Position of double bond in alkenes can be identified by:

A
bromine water
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B
ammoniacal silver nitrate solution
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C
ozonolysis
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D
Baeyer's test
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Solution

The correct option is B ozonolysis
Ozonolysis is the cleavage of an alkene or alkyne with ozone to form organic compounds in which the multiple carbon-carbon bonds have been replaced by a double bond to oxygen. The outcome of the reaction depends on the type of multiple bonds being oxidized.
Bromine water can be also used to identify the position of a double bond. In this reaction, red-brown colour of bromine gets turned into coulorless indicating that there is a double bond.

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