Which one of the following statement(s) is/are incorrect ?

1.	Which one of the following statement(s) is/are incorrect ?
Answer» `KHCO_(3)` is less soluble than `NaHCO_(3)` and is thus prepared easily by FOLLOWING reaction `NH_(4)HCO_(3) + KCl rarr NH_(4) Cl + KHCO_(3)` `Li_(2)SO_(4)` forms double salts(alums) with `Al_(2)(SO_(4))_(3)`. Polarising power of `Li^(+)` ion is nearly the same as that of `Mg^(2+)` ion . Zinc displaces `H_(2)` on reaction with aq NAOH as well as with DILUTE HCl. Answer :A::B

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