1.

A reagent used to test for unsaturation of alkene is

Answer»

Conc. `H_2SO_4`
Ammoniacal `Cu_2Cl_2`
Ammoniacal `AgNO_3`
Solution of `Br_2` in `C Cl_4`

Solution :Solution of BROMINE in CARBON TETRACHLORIDE is used to test for unsaturation of ALKENE. Red colour of bromine disappears due to the FORMATION of colourless dibromo ethane `(C_2H_4Br_2)`


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