Acidic salt NH4Cl (ammonium chloride), Al2(SO4)3 (aluminium sulphate), These are salts of a strong acid and weak base.
Basic salt Na2CO3 (sodium carbonate), KNO2 (potassium nitrite) These are salts of a weak acid and strong base.
Neutral salt NaCl (sodium chloride), K2SO4 (potassium sulphate) These are salts of strong acid and strong base.