Correct order of bond dissociation energy of following halogens is
(1) Cl2 > Br2 > F2 > I2
(2) F2 > Cl2 > Br2 > I2
(3) Cl2 > F2 > Br2 > I2
(4) I2 > Br2 > Cl2 > F2
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Indium is refined by which of the following methods? (1) Van-Arkel (2) Zone-refining (3) Distillation (4) Liquation