This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Salts > Class 7 Science Chapter 4 Salts – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Name the salt produced when reacting potassium hydroxide and phosphoric acid? A) Potassium nitrate. B) Potassium chloride. C) Potassium phosphate. D) Potassium sulfate. Show Answer Correct Answer: C) Potassium phosphate. 2. 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. 3. ..... makes detergents and glass and softening of water A) Sodium choride. B) Ammonium nitrate. C) Magnesium sulphate. D) Sodium carbonate. Show Answer Correct Answer: D) Sodium carbonate. 4. Acid reactions with the principle are called the reaction ..... A) Sublimation. B) Dissociation. C) Indifference. D) Synthesis. Show Answer Correct Answer: C) Indifference. 5. ..... are bitter in taste. A) Acid. B) Salt. C) Bases. D) None Of Them. Show Answer Correct Answer: C) Bases. 6. How do we treat an acidic soil? A) By putting an acid like organic matter. B) By putting a base like quick lime. C) By putting an acid like quick lime. D) By putting a base like organic matter. Show Answer Correct Answer: B) By putting a base like quick lime. 7. 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. 8. When a salt is dissolved in water, which of the following terms describes the water? A) Solution. B) Solute. C) Solvent. D) Precipitate. Show Answer Correct Answer: C) Solvent. 9. 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. 10. 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. 11. Acid comes from a ..... word A) Latin. B) Greek. C) All the above. D) None of the above. Show Answer Correct Answer: A) Latin. 12. ..... refers to the ability of a substance to combine and form a solution A) Solute. B) Solvent. C) Solubility. D) Solution. Show Answer Correct Answer: C) Solubility. 13. Which of the following ions produce a white precipitate that is insoluble in excess ammonia solution? A) Ca$^{2+}$. B) Zn$^{2+}$. C) Mg$^{2+}$. D) None of the above. Show Answer Correct Answer: C) Mg$^{2+}$. 14. Which one of the following is correct property of turmeric indicator A) It turns blue in acidic and red in basic. B) It turns red in acidic and blue in basic. C) It remains colourless in acidic and red in basic. D) It changes to green in all cases (acidic, basic or neutral). Show Answer Correct Answer: B) It turns red in acidic and blue in basic. 15. The acid present in tea is ..... A) Glycolic acid. B) Tannic acid. C) All the above. D) None of the above. Show Answer Correct Answer: B) Tannic acid. 16. Neutral solutions have a pH of 0. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 17. What does Acid release, when it is present in thesolution form. A) H$^{+}$. B) OH$^{-}$. C) Cl$^{-}$. D) NO$^{-}$. Show Answer Correct Answer: A) H$^{+}$. 18. NH solution $ _ {4} $ CL 0.16 m has a PH value as big ..... (k $ _ {b} $ nh $ _ {4} $ oh = 10 $^{-8} $) A) 10-log 4. B) 4 + log 4. C) 4-log 16. D) 10 + log 4. E) 4-log 4. Show Answer Correct Answer: E) 4-log 4. 19. Compound potassium nitrate is classified as: A) Acidic salt. B) Amphotheric hydroxide. C) Neutral salt. D) None of the above. Show Answer Correct Answer: C) Neutral salt. 20. Which gas is evolved when acids react with metals? A) H2. B) CO2. C) N2. D) O2. Show Answer Correct Answer: A) H2. 21. What is the correct order for making a salt? A) Dissolve metal oxide in acid $\rightarrow$ filter $\rightarrow$ evaporate. B) Dissolve metal oxide in acid $\rightarrow$ evaporate $\rightarrow$ filter. C) Filter $\rightarrow$ dissolve metal oxide in acid $\rightarrow$ evaporate. D) Filter $\rightarrow$ evaporate $\rightarrow$ dissolve metal oxide in acid. Show Answer Correct Answer: A) Dissolve metal oxide in acid $\rightarrow$ filter $\rightarrow$ evaporate. 22. Farmers neutralise the effect of acidity of the soil by adding A) Baking soda. B) Caustic Soda. C) Gypsum. D) Slaked lime. Show Answer Correct Answer: D) Slaked lime. 23. Lime water turns red litmus blue. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Neutralisation reaction between a strong acid and weak base forms: A) (c) a neutral salt. B) (a) an acidic salt. C) Salt. D) (b) a basic salt. Show Answer Correct Answer: C) Salt. 25. THE ACID PRESENT IN CITRUS FRUITS IS? A) NUCLEIC ACID. B) ASCORBIC ACID. C) HYDROCHOLORIC ACID. D) NITRIC ACID. Show Answer Correct Answer: B) ASCORBIC ACID. 26. Acid present in gooseberries is A) Oxalic acid. B) Citric acid. C) Lactic acid. D) Tartaric acid. Show Answer Correct Answer: D) Tartaric acid. 27. Bases are ..... in taste and ..... to touch. A) Sour and soapy. B) Bitter and soapy. C) Bitter and gritty. D) Sour and gritty. Show Answer Correct Answer: B) Bitter and soapy. 28. What reactants are used to produce Sodium chloride? A) Sodium hydroxide and nitric acid. B) Sodium hydroxide and phosphoric acid. C) Sodium hydroxide and sulfuric acid. D) Sodium hydroxide and hydrochloric acid. Show Answer Correct Answer: D) Sodium hydroxide and hydrochloric acid. 29. How can factory wastes be neutralized? A) By doing nothing. B) By adding acids. C) By adding basics. D) By adding more waste. Show Answer Correct Answer: C) By adding basics. 30. The drink that many drink every morning:Coffeeis ..... A) Acidic. B) Nuetral. C) Basic. D) None of these. Show Answer Correct Answer: A) Acidic. 31. Solutions having a pH number 8 are A) Acidic. B) Basic. C) Highly acidic. D) None of the above. Show Answer Correct Answer: B) Basic. 32. Acid + metal carbonate gives? A) Salt + H20 + Co2. B) Salt + Co3. C) Salt + H20+ O2. D) Salt + H2 + Co2. Show Answer Correct Answer: A) Salt + H20 + Co2. 33. Substances that are bitter in taste and feel soapy are called- A) Acids. B) Bases. C) Litmus. D) None of The above. Show Answer Correct Answer: B) Bases. 34. A few drops of sodium hydroxide, NaOH solution, is added to an aqueous solution. A green precipitate is formed. Which of the following may be present in the solution? A) Fe$^{3+}$. B) Cu$^{2+}$. C) Fe$^{2+}$. D) NH$_{4}$$^{+}$. Show Answer Correct Answer: C) Fe$^{2+}$. 35. Which of the following substance is Neutral in Nature? A) Hydrochloric Acid. B) Calcium Carbonate. C) Sodium Hydroxide. D) Glucose. Show Answer Correct Answer: D) Glucose. 36. Charges keep a salt ..... A) Together. B) Separate. C) All the above. D) None of the above. Show Answer Correct Answer: A) Together. 37. What is injected into skin when an ant bites A) Water. B) Acid. C) Base. D) Salt. Show Answer Correct Answer: B) Acid. 38. How do indicators help in determining the nature of a substance? A) By changing color in the presence of acids or bases. B) By producing a foul smell when heated. C) By emitting a sound when in contact with water. D) By becoming heavier in the presence of oxygen. Show Answer Correct Answer: A) By changing color in the presence of acids or bases. 39. Which of the following is a use of a salt as a food preservative? A) Sodium Carbonate. B) Magnesium Sulphate. C) Sodium chloride. D) Ammonium nitrate. Show Answer Correct Answer: C) Sodium chloride. 40. State whether the following compound is soluble or insoluble. Calcium chloride, CaCl$_{2}$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble. 41. Colour of phenolphthalein in acidic solution is: A) Colourless. B) Pink. C) Purple. D) Blue. Show Answer Correct Answer: A) Colourless. 42. What are the properties of bases? A) Bitter taste, slippery feel, and ability to turn red litmus paper blue. B) No taste, dry texture, and ability to turn blue litmus paper yellow. C) Sweet taste, slimy texture, and ability to turn red litmus paper green. D) Sour taste, rough texture, and ability to turn blue litmus paper red. Show Answer Correct Answer: A) Bitter taste, slippery feel, and ability to turn red litmus paper blue. 43. Bryan wants to prepare silver chloride in the science laboratory. Which of the following reactants should he use? A) Silver + chlorine gas. B) Silver hydroxide + hydrochloric acid. C) Silver nitrate + potassium chloride. D) Silver + hydrochloric acid. Show Answer Correct Answer: C) Silver nitrate + potassium chloride. 44. Which of the following ion is responsible for the acidic nature of hydrochloric acid? A) Chloride ion. B) Hydroxide ion. C) Hydrochloride ion. D) Hydrogen ion. Show Answer Correct Answer: D) Hydrogen ion. 45. Calcium Chloride, CaCl$_{2}$ A) Soluble Salt. B) Insoluble Salt. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble Salt. 46. What is formed when neutralization occurs? A) PH. B) Water. C) Acid. D) Base. Show Answer Correct Answer: B) Water. 47. What color does phenolphthalein give when the solution is basic? A) Blue. B) Yellow. C) Red. D) Colorless. Show Answer Correct Answer: D) Colorless. 48. Salts that are made with carbonic acid are called ..... A) Sulfates. B) Carbonates. C) Chlorides. D) Nitrates. Show Answer Correct Answer: B) Carbonates. 49. Most Organic Acids Are A) Very strong. B) Extremely dangerous. C) Weak. D) Strong. Show Answer Correct Answer: C) Weak. 50. Which one of the following is an artificial indicator? A) Phenophthetin. B) Phenolphthalein. C) Phenophthelin. D) Phinophthelin. Show Answer Correct Answer: B) Phenolphthalein. 51. Litmus is extracted from ..... ? What is mauve? A) Mosses, litchis. B) Lichens, magenta. C) Lichens, purple. D) Mosses, lichens. Show Answer Correct Answer: C) Lichens, purple. 52. Assertion:Phenolphthalein is an acid-base indicator.Reason:Phenolphthalein gives different colours in acidic and basic medium. A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is not the correct explanation of A. C) A is true but R is false. D) A is false but R is true. Show Answer Correct Answer: A) Both A and R are true and R is the correct explanation of A. 53. Name the salt produced between the reaction of Zinc and hydrochloric acid. A) Zinc chloride. B) Zinc hydroxide. C) Zinc oxide. D) Zinc sulfate. Show Answer Correct Answer: A) Zinc chloride. 54. Which is the insoluble salt produced when silver nitrate reacts with potassium chloride? A) Potassium nitrate. B) Silver chloride. C) All the above. D) None of the above. Show Answer Correct Answer: B) Silver chloride. 55. Methyl orange turn acid ..... and turn base into ..... colour A) Red, yellow. B) Red, blue. C) All the above. D) None of the above. Show Answer Correct Answer: A) Red, yellow. 56. What colour does the solution turn when sulfuric acid is added to copper carbonate? A) Green. B) Purple. C) Blue. D) Clear. Show Answer Correct Answer: C) Blue. 57. 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) chloride. D) Iron (II) nitrate. Show Answer Correct Answer: A) Iron (II) sulfate. 58. 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. 59. 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. 60. What piece of equipment is required for crystallisation? A) Evaporating dish. B) Petri dish. C) Funnel. D) Filter paper. Show Answer Correct Answer: A) Evaporating dish. ← PreviousNext →Related QuizzesScience QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books