Chemistry : Acid, Base and Salts

Which of the following salts is soluble?

• Lead (II) chloride

• Barium sulphate

• Calcium sulphate

• Potassium carbonate

Which of the following salts can be prepared by double decomposition reaction?

• Zinc nitrate

• Barium sulphate

• Sodium chloride

• Potassium carbonate

Which statement is true about salt?

• All salts dissolve in water

• All nitrate salts dissolve in water

• All salts are covalent compound

Which of the following is a soluble salt?

• Calcium carbonate

• Barium sulphate

• Lead (II) chloride

• Ammonium nitrate

Which substance is a diprotic acid?

• Sulphuric acid

• Ethanoic acid

• Phosphoric acid

• Nitric acid

Which of the following particles in hydrochloric acid is responsible for its acidic properties?

• Hydrogen ion

• Chloride ion

• Hydroxide ion

• Sulphate ion

Which of the following substance can be used to neutralise wasp stings?

• Carbon

• Toothpaste

• Vinegar

• Sodium Bicarbonate

Plants do not grow well in acidic soil. Which of the following substances can be used to overcome the problem?

• Sodium oxide

• Calcium oxide

• Potassium hydroxide

• Magnesium hydroxide

Which of the following solutions gives the lowest pH value?

• 1.0 mol dm-3 Sulphuric acid

• 1.0 mol dm-3 Ethanoic acid

• 1.0 mol dm-³ Ammonia solution

• 1.0 mol dm-3 Sodium hydroxide solution

Which of the following best defines the term ‘salt’?

• Formed when a

  hydrogen ion in an acid is replaced by a metal ion or ammonium ion

• Formed when a metal ion reacts with a non- metal ion

• That contains sodium ions and chloride ions

• It is salty in taste