Assertion :Baking powder contains NaHCO3, Ca(H2PO4)2, starch and NaAl(SO4)2. Reason: NaHCO3 Ca(H2PO4)2 is acidic in aqueous solution. Acidic solution of Ca(H2PO4)2 liberates CO2 on reaction with NaHCO3Starch ] as a filterNaAl(SO4)2 retarder so that CO2 is given off more slowly while preparing cake or bread.