This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Salt is formed when ..... ion is displaced from the acid A) Cation. B) Anion. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cation. 2. State whether the following compound is soluble or insoluble. Silver chloride, AgCl A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insoluble. 3. Baking Soda is scientifically called as A) Sodium HydrogenCarbonate. B) Sodium Oxide. C) Sodium Carbonate. D) Sodium Hydroxide. Show Answer Correct Answer: A) Sodium HydrogenCarbonate. 4. WHAT IS THE COMMON NAME FOR SODIUM HYDROXIDE? A) SLAKED LIME. B) QUICK LIME. C) BAKING SODA. D) CAUSTIC SODA. Show Answer Correct Answer: D) CAUSTIC SODA. 5. What is the chemical formulae for Hydrochloric acid? A) H$_{2}$SO$_{4}$. B) HNO$_{3}$. C) HCl. D) None of the above. Show Answer Correct Answer: C) HCl. 6. If the KX salt solution 0.01 m has a pH = 9, the price of the HX acid is as big ..... A) 10$^{-8}$. B) 10$^{-7}$. C) 10$^{-6}$. D) 10$^{-5}$. E) 10$^{-4}$. Show Answer Correct Answer: C) 10$^{-6}$. 7. Compound aluminium hydroxide is classified as: A) Amphotherichydroxide. B) Basic salthydroxide. C) Middle salt. D) None of the above. Show Answer Correct Answer: A) Amphotherichydroxide. 8. Which type of salt the following salt are classiffied as?"LiCH$_{3}$COO" A) Neutral salt. B) Acidic salt. C) Basic salt. D) None of the above. Show Answer Correct Answer: C) Basic salt. 9. Name the plant from which litmus paper is extracted A) Jute. B) Lichens. C) Fungi. D) Pitcher plant. Show Answer Correct Answer: B) Lichens. 10. Which equation correctly shows the displacement of zinc by iron? A) Copper + zinc sulphate $\rightarrow$ copper sulfate + zinc. B) Zinc sulphate + copper $\rightarrow$ copper sulfate + zinc. C) Copper sulfate + zinc $\rightarrow$ zinc sulfate + copper. D) Iron cannot displace zinc. Show Answer Correct Answer: D) Iron cannot displace zinc. 11. LITMUS SOLUTION TURNS WHICH COLOUR IN ACID AND BASE? A) YELLOW, RED. B) RED, BLUE. C) PURPLE, RED. D) MAGENTA, GREEN. Show Answer Correct Answer: B) RED, BLUE. 12. Out of these gases which one is used in fire extinguishers A) CO2. B) Ill. C) NO2. D) H2s. Show Answer Correct Answer: A) CO2. 13. ..... reaction is a reaction between an acid and a base to form a salt. A) Crystallization. B) Neutralization. C) Both. D) None. Show Answer Correct Answer: B) Neutralization. 14. What is the colour of hydrated Copper (II) sulphate? A) White. B) Blue. C) Pink. D) Brown. Show Answer Correct Answer: B) Blue. 15. THESE ARE EXAMPLES OF NATURAL INDICATORS A) CHINA ROSE. B) HIBISCUS. C) SHOE FLOWER. D) ALL THE ABOVE. Show Answer Correct Answer: D) ALL THE ABOVE. 16. Name the salt produced when reacting potassium hydroxide and phosphoric acid? A) Potassium chloride. B) Potassium nitrate. C) Potassium sulfate. D) Potassium phosphate. Show Answer Correct Answer: D) Potassium phosphate. 17. Which of the following is the correct definition for a strong acid? A) Partially dissociates into ions when dissolved in water. B) Fully dissociates into ions when dissolved in water. C) A larger proportion of acid to water molecules. D) A smaller proportion of acid to water molecules. Show Answer Correct Answer: B) Fully dissociates into ions when dissolved in water. 18. ..... makes detergents and glass and softening of water A) Ammonium nitrate. B) Sodium choride. C) Magnesium sulphate. D) Sodium carbonate. Show Answer Correct Answer: D) Sodium carbonate. 19. Acid reactions with the principle are called the reaction ..... A) Indifference. B) Dissociation. C) Sublimation. D) Synthesis. Show Answer Correct Answer: A) Indifference. 20. ..... are bitter in taste. A) Acid. B) Salt. C) Bases. D) None Of Them. Show Answer Correct Answer: C) Bases. 21. How do we treat an acidic soil? A) By putting a base like quick lime. B) By putting a base like organic matter. C) By putting an acid like quick lime. D) By putting an acid like organic matter. Show Answer Correct Answer: A) By putting a base like quick lime. 22. Compound lithium hydroxide is classified as: A) Hydroxide. B) Acidic salt. C) Neutral salt. D) None of the above. Show Answer Correct Answer: A) Hydroxide. 23. When a salt is dissolved in water, which of the following terms describes the water? A) Solute. B) Solvent. C) Solution. D) Precipitate. Show Answer Correct Answer: B) Solvent. 24. An acidic substance turns ..... litmus paper ..... A) RED, BLUE. B) BLUE, RED. C) YELLOW, RED. D) NONE OF THESE. Show Answer Correct Answer: B) BLUE, RED. 25. Barium sulphate / barium sulfat A) Barium oxide + sulphuric acidbarium oxide + sulfuric acid. B) Barium hydroxide + sulphuric acidbarium hydroxide + sulfuric acid. C) Barium nitrate + sodium sulphateBarium nitrat + natrium sulfat. D) None of the above. Show Answer Correct Answer: C) Barium nitrate + sodium sulphateBarium nitrat + natrium sulfat. ← 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