(a) Chloride, nitrate, hydride, ammonium
Answer
Ammonium - Ammonium is odd because Ammonium is cation and rest are anions.
(b) Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia
Answer
Hydrogen chloride is odd because Hydrogen chloride is acid and rest are base.
(c) Acetic acid, carbonic acid, hydrochloric acid, nitric acid
Answer
Acetic acid is odd because Acetic acid is organic acid, others are inorganic acid
(d) Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate.
Answer
Ammonium chloride is odd because it is acidic salt and rest all are neutral salts.
(e) Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride.
Answer
Sodium carbonate is odd because solution of sodium carbonate is basic, others are neutral salt.
(f) Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.
Answer
Zinc oxide is odd because it is amphoteric in nature and other ions are basic in nature
(g) Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.
Answer
Crystalline Common salt is odd because on heating, there is no change in color of compound. But in rest of the compounds, there is change in colour, they are crystalline substances contain water of crystallization.
(h) Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.
Answer
Acetic acid is odd one because acetic acid is weak electrolytes others are strong electrolytes.
