1.

Match the column I & II using the code given below the column.Column IColumn IIA. Charcoal1. NitrogenB. Silica gel2. HydrogenC. Mica3. WaterD. Nickel4. AmmoniaABCD(a)4312(b)3241(c)2134(d)1423

Answer»

(a)  4 3 1 2



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