SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What happens when a few drops of bromine water are added to excess hex-1-ene and the mixture is shaken?I. The colour of the bromine water disappears.II. The organic product formed does not contain any carbon-carbon double bonds.III. 2-bromohexane is formed.
A
I and II only
B
I and III only
C
II and III only
D
I, II and III
Explanation: 

Detailed explanation-1: -This allows us to distinguish alkenes from alkanes using a simple chemical test. Bromine water is an orange solution of bromine. It becomes colourless when it is shaken with an alkene. Alkenes can decolourise bromine water, but alkanes cannot.

Detailed explanation-2: -When bromine water is shaken with a liquid organic compound, it is rapidly decolourized. What can be determined from this test? The compound is an alcohol.

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