Question

write a test to detect the presence of a double bond in a molecule

Answer 1

Addition of bromnie present in CCl4 to alkene results in the discharge of a reddish brown colour of bromine . this shows the presence of double bond in a molecule.

Answer 2

'Adding Bromine water in CCI4' is the test to detect the presence of a double bond in a molecule

Explanation:

• To test the presence of a double bond in a molecule, bromine water (Br2) containing CCl4(tetrachloromethane) can be added to an organic/unsaturated compound.
• If the orange color of bromine discharges or disappears, then it contains a double bond.
• The other test to determine this could be Bayer's test(by adding a base, if it becomes colorless, then the double bond is present).

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