This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the difference of water molecules between Gypsum and Plaster of Paris? A) 2. B) 1. C) 1.5. D) 0.5. Show Answer Correct Answer: C) 1.5. 2. Which method of preparation can be used to make a sample of sample of copper carbonate? A) Metal and acid. B) Acid and base. C) Precipitation. D) None of the above. Show Answer Correct Answer: C) Precipitation. 3. What is the name of the compound Fe2O3? A) Oxide. B) Thiosulphate. C) Sulfate. D) None of the above. Show Answer Correct Answer: A) Oxide. 4. ..... is used as an Antacid. A) Magnesium Hydroxide. B) Sodium Hydroxide. C) Ammonium Hydroxide. D) Calcium Hyrdroxide. Show Answer Correct Answer: A) Magnesium Hydroxide. 5. Which of the following is not a type of salt? A) Normal salts. B) Acid salts. C) Double salts. D) Soluble salt. Show Answer Correct Answer: D) Soluble salt. 6. What is the colour change observed with phenolphthalein when adding acid to alkali? A) Pink $\rightarrow$ colourless. B) Blue $\rightarrow$ red. C) Orange $\rightarrow$ pink. D) Green $\rightarrow$ yellow. Show Answer Correct Answer: A) Pink $\rightarrow$ colourless. 7. Indicator is a substance which shows different colours in acidic and basic solutions. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. ORGANIC ACIDS ARE PRESENT IN A) MINERALS. B) TURMERIC. C) FRUITS AND VEGETABLES. D) PHENOPHTHALIN. Show Answer Correct Answer: C) FRUITS AND VEGETABLES. 9. The solubility of silver hydroxide is greatly decreased in a ..... A) Basic solution. B) Acidic solution. C) Neutral solution. D) None of the above. Show Answer Correct Answer: A) Basic solution. 10. Which reactants will not produce salt and water?Bahan tindak balas manakah tidak akan menghasilkan garam dan air? A) Sodium hydroxide and nitric acidnatrium hydroxide and nitric acid. B) Potassium hydroxide and ethanoic acidKalium hidroksida dan asid etanoik. C) Copper (II) carbonate and sulphuric acid Kuprum (II) karbonat dan asid sulfurik. D) Copper (II) Oxide and Hydrochloric Acid Kuprum (II) oxide and hydrochloric acid. Show Answer Correct Answer: C) Copper (II) carbonate and sulphuric acid Kuprum (II) karbonat dan asid sulfurik. 11. Explosives A) Nitric Acid. B) Sulphuric Acid. C) Acetic Acid. D) None of the above. Show Answer Correct Answer: A) Nitric Acid. 12. The pH of a dilute base A) 7. B) 14. C) 8. D) 6. Show Answer Correct Answer: C) 8. 13. What is the color of hydrated copper sulphate? A) Green. B) Pink. C) White. D) Blue. Show Answer Correct Answer: D) Blue. 14. What color will Red litmus paper will change in Acid? A) Blue. B) Red. C) No color change. D) Everything is possible. Show Answer Correct Answer: C) No color change. 15. ..... are soluble. A) All carbonates. B) All chlorides. C) All nitrates. D) All sulfates. Show Answer Correct Answer: C) All nitrates. 16. The most commonly used natural indicator is ..... it is extracted from ..... A) China rose extracted from China rose plant. B) Turmeric extracted from turmeric plant. C) Litmus extracted from lichens. D) Phenolphthalein extracted from lichens. Show Answer Correct Answer: C) Litmus extracted from lichens. 17. Barium chloride / Barium klorida A) Barium hydroxide + hydrochloric acidbarium hydroxide + asdi hydrochloric. B) Barium hydroxide + potassium chloridebarium hydroxide + potassium chloride. C) Barium nitrate + potassium chloridebarium nitrat + potassium klorida. D) None of the above. Show Answer Correct Answer: A) Barium hydroxide + hydrochloric acidbarium hydroxide + asdi hydrochloric. 18. Orange has? A) Oxalic acid. B) Lactic acid. C) Citric acid. D) None of the above. Show Answer Correct Answer: C) Citric acid. 19. What are some common examples of acids? A) Citric acid, sulfuric acid, hydrochloric acid, and acetic acid. B) Sodium hydroxide, potassium hydroxide, calcium hydroxide, and magnesium hydroxide. C) Lactic acid, nitric acid, carbonic acid, and phosphoric acid. D) Ammonia, bleach, vinegar, and baking soda. Show Answer Correct Answer: A) Citric acid, sulfuric acid, hydrochloric acid, and acetic acid. 20. Show neutral salt: A) BaCl2. B) Nahda. C) NaKSO4. D) None of the above. Show Answer Correct Answer: A) BaCl2. 21. Give the name of an ion Cl$^{-}$: A) Chloride. B) Perchlorate. C) Hypochlorite. D) None of the above. Show Answer Correct Answer: A) Chloride. 22. Magnesium + sulphuric acid $\rightarrow$? A) Magnesium sulfate + water. B) Magnesium sulfate + hydrogen. C) Magnesium chloride + hydrogen. D) Magnesium chloride + water. Show Answer Correct Answer: B) Magnesium sulfate + hydrogen. 23. Which of the following are the physical characteristics of salt crystal?I They have similar size. II They have fixed angle.III They have fixed geometrical shapes.IV They have flat surface, straight edges and sharp angles. A) I, II and III. B) I, II and IV. C) I, III and IV. D) II, III and IV and IV. Show Answer Correct Answer: D) II, III and IV and IV. 24. In a reaction between an acid and a carbonate gas bubbles will appear. What is that gas? A) Helium. B) Hydrogen. C) Oxygen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 25. Compound aluminum sulfate is classified as: A) Neutral salt. B) Acidic salt. C) Basic salt. D) None of the above. Show Answer Correct Answer: A) Neutral salt. ← PreviousNext →Related QuizzesClass 7 Science Chapter 4 Salts Quiz 1Class 7 Science Chapter 4 Salts Quiz 2Class 7 Science Chapter 4 Salts Quiz 3Class 7 Science Chapter 4 Salts Quiz 4Class 7 Science Chapter 4 Salts Quiz 5Class 7 Science Chapter 4 Salts Quiz 6Class 7 Science Chapter 4 Salts Quiz 7Class 7 Science Chapter 4 Salts Quiz 8Class 7 Science Chapter 4 Salts Quiz 9Class 7 Science Chapter 4 Salts Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books