Question

How many of the following statements are correct ?
(a)BeO is amphoteric in nature ltbgt (b)`LiHCO_3` is not found in solid state.
( c)`K_2O_2` is diamagnetic but `KO_2` is paramagnetic
(d)Hydrated magnesium chloride on heating in dry air gives anhydrous `MgCl_2`
(e)`AlCl_3` is soluble in excess of NaOH and form sodium meta aluminate
(f)Anhydrous potassium nitrate on heating with potassium metal gives potassium oxide and nitrogen gas
(g)Lithium chloride is highly soluble in water.

Answer 1

Correct Answer - 5
(a),(b), (e) & (f) are correct.
(b)`LiHCO_3oversetDeltatoLi_2CO_3+H_2O+CO_2`
(d)`MgCl_2 . 6H_2O to MgO+HCl+H_2O`
(e)`AlCl_3+4NaOH("excess")to NaAlO_2+2H_2O+3NaCl`
(f)`KNO_3+K to K_2O+N_2`