kimia chapter 8


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kimia chapter 8

  1. 1. CURICULUM DEVELOPMENT CENTRE PRETEST TOPIC: SALTS Time: 10 minutes Answer all questions. Write your answers in the spaces provided in the table below. Pretest Answer Table 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 1 Which of the following is an example of salts used in daily life? A Sodium hydroxide B Magnesium oxide C Ethanoic acid D Sodium bicarbonate 2 Salt X is used as fertilisers in agriculture. What is salt X? A Sodium chloride B Calcium carbonate C Ammonium sulphate D Monosodium glutamate 3 Kamal is suffering from gastric. Which of the following salt can be used to neutralise the excess hydrochloric acid in his stomach? A Sodium hydrogen carbonate B Ammonium nitrate C Potassium chloride D Barium sulphate 4 Name the acid used to prepare ammonium chloride. A Nitric acid B Sulphuric acid C Phosphoric acid D Hydrochloric acid 5 What is the salt formed when hydrochloric acid reacts with sodium hydroxide? A Sodium sulphate B Sodium chloride C Sodium nitrate D Sodium phosphate 121
  2. 2. 6 Which of the following chemical equations represent neutralisation? I H2SO4 (aq) + 2NaOH (aq) → Na2SO4 (aq) + 2H2O (l) II 2HNO3 (aq) + PbO (s) → Pb(NO3)2 (aq) + H2O (l) III HCl (aq) + KOH (aq) → KCl (aq) + H2O (l) IV Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g) A I and III only B II and IV only C I, II and III only D I, II, III and IV 7 Which of the following reactions can produced potassium sulphate? I Potassium hydroxide solution and nitric acid II Potassium hydroxide solution and sulphuric acid III Solid potassium oxide and sulphuric acid IV Solid potassium carbonate and nitric acid A I and II only B I and III only C II and III only D II, III and IV only 8 Which of the following statements about salts are true? I Sodium chloride is the salt used in cooking. II The type of reaction that can produce salts is neutralisation. III Carbonic acid is used to produce nitrate salts. IV Copper (II) sulphate is produced when copper metal is added to sulphuric acid. A I and II only B I and IV only C II and IV only D II, III and IV only 9 What type of salts is formed when ethanoic acid is used? A Nitrate salts B Sulphate salts C Chloride salts D Ethanoate salts 1 A salt is defined as a compound formed when 0 A the hydrogen ions in the acid is replaced by the metal or ammonium ions. B the hydroxide ions in the alkali is replaced by the metal or ammonium ions. C the hydrogen ions in the acid is replaced by the non-metal ions. D the hydroxide ions in the alkali is replaced by the non-metal ions. 122