This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the name of the salt produced between the reaction of Iron (II) oxide and sulfuric acid? A) Iron (II) sulfate. B) Iron (II) carbonate. C) Iron (II) nitrate. D) Iron (II) chloride. Show Answer Correct Answer: A) Iron (II) sulfate. 2. Which of the following reaction can produce sodium nitrate and water? A) Sodium chloride solution and nitric acid. B) Sodium sulphate solution and nitric acid. C) Sodium hydroxide solution and nitric acid. D) Sodium and dilute nitric acid. Show Answer Correct Answer: C) Sodium hydroxide solution and nitric acid. 3. During Neutralization, ..... and ..... are formed A) Salt and water. B) Only water. C) Only salt. D) Nothing. Show Answer Correct Answer: A) Salt and water. 4. What piece of equipment is required for crystallisation? A) Filter paper. B) Funnel. C) Petri dish. D) Evaporating dish. Show Answer Correct Answer: D) Evaporating dish. 5. Which of the following pairs of solutions will produce a white precipitate? A) Lead (II) nitrate and sodium chloride. B) Magnesium nitrate and sodium sulphate. C) Calcium nitrate and sodium chloride. D) Barium sulphate and sodium chloride. Show Answer Correct Answer: A) Lead (II) nitrate and sodium chloride. 6. Phenolphthalein remains ..... when a solution is acidic. A) Blue. B) Yellow. C) Pink. D) Colourless. Show Answer Correct Answer: D) Colourless. 7. The correct mathematical expression for finding the molar solubility (s) of Sn(OH)$_{2}$ is: A) 2s$^{2}$ = Ksp. B) 2s$^{3}$ = Ksp. C) 4s$^{3}$ = Ksp. D) 8s $^{3} $ = ksp. Show Answer Correct Answer: C) 4s$^{3}$ = Ksp. 8. Which of these products makes a cake spongy? A) Water. B) Sodium Salt. C) Carbon dioxide. D) Acid. Show Answer Correct Answer: C) Carbon dioxide. 9. Among the following, which is NOT a form of calcium carbonate A) Chalk. B) Limestone. C) Quick lime. D) Egg shell. Show Answer Correct Answer: C) Quick lime. 10. Colours of phenolphthalein indicator in acidic and basic medium, respectively are: A) Pink and colourless. B) Colourless and pink. C) Blue and red. D) Red and blue. Show Answer Correct Answer: B) Colourless and pink. 11. What is the name of the process in which the reaction between acid and base takes place to give salt and water? A) Neutralization. B) Condensation. C) Distillation. D) None of the above. Show Answer Correct Answer: A) Neutralization. 12. What type of reaction produced an insoluble salt? A) Neutralisation reaction. B) Precipitation reaction. C) Titration reaction. D) Insoluble reaction. Show Answer Correct Answer: B) Precipitation reaction. 13. Which of the following salts dissolves only when hot? A) NaCl. B) KCl. C) Case $ _ {4} $. D) PbCl$_{2}$. Show Answer Correct Answer: D) PbCl$_{2}$. 14. Alkalis react with acids and neutralize them. Which of the following is the correct word equation representing neutralization reaction? A) Sodium hydroxide + hydrochloric acid = sodium chloride + water. B) Sodium oxide + water = sodium hydroxide. C) Copper carbonate + nitric acid = copper nitrate + water + carbon dioxide. D) Ammonia + hydrochloric acid = ammonium chloride. Show Answer Correct Answer: A) Sodium hydroxide + hydrochloric acid = sodium chloride + water. 15. Soap can be prepared by boiling ..... oil and ..... fat A) Vegetable, animal. B) Olive, bird. C) All the above. D) None of the above. Show Answer Correct Answer: A) Vegetable, animal. 16. Which is not a natural indicator A) Litmus. B) Turmeric. C) China rose. D) Phenoptyalin. Show Answer Correct Answer: D) Phenoptyalin. 17. A compound if acidic will turn all indicators red. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. Define the term insoluble. A) Can dissolve in water. B) Cannot dissolve in water. C) Partially dissolves in water. D) None of the above. Show Answer Correct Answer: B) Cannot dissolve in water. 19. When an ant bites, it injects A) Acidic liquid. B) Basic liquid. C) Both (a) and (b). D) Neutral liquids. Show Answer Correct Answer: A) Acidic liquid. 20. Mortar A) Potassium Hydroxide. B) Calcium Hydroxide. C) Magnesium Hydroxide. D) None of the above. Show Answer Correct Answer: B) Calcium Hydroxide. 21. Find the acid in the following- A) NaOh. B) CA (OH) 2. C) Mg(OH)2. D) H3PO4. Show Answer Correct Answer: D) H3PO4. 22. Which of the following salts is commonly used in cooking? A) Sodium chloride. B) Calcium carbonate. C) Magnesium sulfate. D) Potassium nitrate. Show Answer Correct Answer: A) Sodium chloride. 23. Zinc + nitric acid $\rightarrow$? A) Zinc sulfate + water. B) Zinc sulfate + hydrogen. C) Zinc nitrate + hydrogen. D) Zinc chloride + water. Show Answer Correct Answer: C) Zinc nitrate + hydrogen. 24. Which of the following reactants are suitable to prepare iron(II) sulfate? A) FeCl$_{2}$ + H$_{2}$SO$_{4}$. B) Fe(NO$_{3}$)$_{2}$ + H$_{2}$SO$_{4}$. C) Fe + H$_{2}$SO$_{4}$. D) $ _ {4} $ + H $ _ {2} $ So $ _ {4} $. Show Answer Correct Answer: C) Fe + H$_{2}$SO$_{4}$. 25. ..... + nitric acid $\rightarrow$ calcium nitrate + water A) Calcium sulfate. B) Calcium oxide. C) Calcium carbonate. D) Calcium. Show Answer Correct Answer: B) Calcium oxide. ← 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