This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Salts > Class 7 Science Chapter 4 Salts – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Potassium chromate solution reacts with solution L to form a yellow precipitate. What could be L contains? A) Pb$^{2+}$. B) Mg$^{2+}$. C) Zn$^{2+}$. D) Ca$^{2+}$. Show Answer Correct Answer: A) Pb$^{2+}$. 2. If upto (a) of salt is soluble in 100 ml of salt, it is referred as a soluble salt A) A. 1g. B) 199g. C) 19 g. D) None of the above. Show Answer Correct Answer: A) A. 1g. 3. Lime water reacts with chlorine to form A) Caocl $ _ {2} $. B) Ca(ClO$_{3}$)$_{2}$. C) CaO$_{2}$Cl$_{2}$. D) Cacl $ _ {2} $. Show Answer Correct Answer: A) Caocl $ _ {2} $. 4. Ant stings contains: A) Sodium Hydrogen Carbonate. B) Acetic Acid. C) Zinc carbonate. D) Formic Acid. Show Answer Correct Answer: D) Formic Acid. 5. Neutralisation reaction occurs between? A) Acids and acids. B) Acids and bases. C) Bases and bases. D) None of the above. Show Answer Correct Answer: B) Acids and bases. 6. Give the name of an ion SO4 $^{2-}$: A) Sulfite. B) Sulfate. C) Thiosulphate. D) None of the above. Show Answer Correct Answer: B) Sulfate. 7. One drawback of pH paper is that it A) Is not very accurate. B) Is very expensive. C) Only tells you if a substance is an acid or a base. D) Has to be connected to a computer. Show Answer Correct Answer: A) Is not very accurate. 8. What is Alkalis? A) Bases that are not soluble in water. B) They are composed of carbon and hydrogen atoms. C) Bases That dissolve in water. D) Derived from one or more mineral compounds. Show Answer Correct Answer: C) Bases That dissolve in water. 9. The gas which burns with a pop sound ( H2, CO2, CuSO4, CH4) A) CH$_{4}$. B) H$_{2}$. C) O$_{2}$. D) CO$_{2}$. Show Answer Correct Answer: B) H$_{2}$. 10. Metal + Acid yields ..... A) Salt + Hydrogen. B) Salt + Alkali. C) Salt + Water + Carbon Dioxide. D) Salt + Water. Show Answer Correct Answer: A) Salt + Hydrogen. 11. What is the purpose of a titration when making pure salts? A) To determine the exact quantities needed for neutralisation. B) To calculate the concentration of the salt. C) To test quality of reactants. D) To test if reactants react. Show Answer Correct Answer: A) To determine the exact quantities needed for neutralisation. 12. Give the name of an ion S$^{2-}$: A) Sulfide. B) Sulphonate. C) Sulfite. D) None of the above. Show Answer Correct Answer: A) Sulfide. 13. Special type of substances are used to test whether a substance is acidic or basic. These substances are known as ..... A) Indicators. B) China rose. C) Turmeric. D) Litmus paper. Show Answer Correct Answer: A) Indicators. 14. What is formed during neutralisation? A) Sodium hydroxide. B) Salt and nichrome. C) Salt. D) Water ( distilled ). Show Answer Correct Answer: C) Salt. 15. Strong Acids are A) Common. B) Dilute. C) Powerful. D) Concentrated. Show Answer Correct Answer: D) Concentrated. 16. How do bases feel and taste? A) Slippery and bitter. B) Gritty and salty. C) Rough and sweet. D) Smooth and sour. Show Answer Correct Answer: A) Slippery and bitter. 17. While diluting acid, acid should be added to water dropwise with continues stirring. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Chemica formula of carbomic acid A) HNI3. B) Hakka. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hakka. 19. Anshuman stained his handkerchief with turmeric. His handkerchief turned ..... when he rubbed soap on it. A) Green. B) Red. C) Yellow. D) Blue. Show Answer Correct Answer: B) Red. 20. What is the salt produced if you react Sodium carbonate and sulfuric acid? A) Sodium oxide. B) Sodium phosphate. C) Sodium hydroxide. D) Sodium sulfate. Show Answer Correct Answer: D) Sodium sulfate. 21. Which of the following is Natural Indicator for Acid & Base A) Methyl orange. B) Universal Indicator. C) China Rose. D) None of the above. Show Answer Correct Answer: C) China Rose. 22. China rose indicator turns basic solutions to ..... A) Green. B) Red. C) Dark pink. D) Yellow. Show Answer Correct Answer: A) Green. 23. Copper (II) Carbonate / Kuprum (II) karbonat A) Copper (II) oxide + Carbonic acbonic aidKuprum (II) oxid +. B) Copper (II) chloride + Carbonic acidKuprum (II) klorida + asid karbonik. C) Copper (II) chloride + Sodium carbonateKuprum (II) klorida + natrium karbonat. D) None of the above. Show Answer Correct Answer: C) Copper (II) chloride + Sodium carbonateKuprum (II) klorida + natrium karbonat. 24. Phenolphthalein is a synthetic indicator and its colours inacidic and basic solutions, respectively are A) Red and blue. B) Blue and yellow. C) Colorless and pink. D) Red and yellow. Show Answer Correct Answer: C) Colorless and pink. 25. What is the nature of lime juice? A) Neutral. B) Basic. C) Acidic. D) None of the above. Show Answer Correct Answer: C) Acidic. 26. What is the remedy for ant bite? (formic acid) A) Calcuim hydroxide. B) Soap solution. C) Turmeric. D) Sodium hydrogen carbonate. Show Answer Correct Answer: D) Sodium hydrogen carbonate. 27. Which of the following is spread on icy roads to melt ice in cold countries? A) Sodium bicarbonate. B) Rock salt. C) Sodium hydroxide. D) None of these. Show Answer Correct Answer: B) Rock salt. 28. What reactants are needed to prepare (make) lead sulfate? A) Lead and hydrochloric acid. B) Lead and sulfuric acid. C) Lead and nitric acid. D) Lead and carbonic acid. Show Answer Correct Answer: B) Lead and sulfuric acid. 29. Which of the following salts is generally considered soluble in water? A) $ \text {Baso} _4 $. B) $\text{PbSO}_4$. C) $ \text {nacl} $. D) $\text{AgCl}$. Show Answer Correct Answer: C) $ \text {nacl} $. 30. Which of the following will turn red, when a few drops of methyl orange is added? A) Hydrochloric acid. B) Baking soda. C) Washing soda. D) Sodium hydroxide. Show Answer Correct Answer: A) Hydrochloric acid. 31. When ant or bee sting it releases A) Base. B) Formic acid. C) Salt. D) None of these. Show Answer Correct Answer: B) Formic acid. 32. What ions arise during the dissociation of ca (no $ _ {3} $) $ _ {2} $? A) Ca $^{+} $ no $ _ {3} $$^{2-} $. B) 2ca $^{2+} $ no $ _ {3} $$^{-} $. C) Ca$^{ }$2NO$_{3}$. D) Ca$^{2+ }$2NO$_{3}$$^{-}$. Show Answer Correct Answer: D) Ca$^{2+ }$2NO$_{3}$$^{-}$. 33. The solubility will ..... for Ag$_{2}$CrO$_{4}$ if the pH decreases. A) Increase. B) Decrease. C) Remain the same. D) None of the above. Show Answer Correct Answer: A) Increase. 34. What is the nature of HNO$_{2 }$ A) An ionic compound. B) An acid. C) A base. D) A salt. Show Answer Correct Answer: B) An acid. 35. Ant bites you ..... You are feeling pain ..... What should be used in order to cure pain? A) Formic Solution. B) Callamine Solution. C) HCL Solution. D) Calamine Solution. Show Answer Correct Answer: D) Calamine Solution. 36. Give an example of a neutralization reaction. A) Hydrochloric acid + Sodium hydroxide $\rightarrow$ Sodium chloride + Water. B) Sulfuric acid + Potassium hydroxide $\rightarrow$ Potassium sulfate + Water. C) Vinegar + Baking soda $\rightarrow$ Carbon dioxide + Water. D) Nitric acid + Calcium hydroxide $\rightarrow$ Calcium nitrate + Water. Show Answer Correct Answer: A) Hydrochloric acid + Sodium hydroxide $\rightarrow$ Sodium chloride + Water. 37. Which colour does Ph strip turn when it is in contact with very strong base A) Green ( Ph7). B) Red ( ph2 ). C) Dark purple ( ph14). D) None of the above. Show Answer Correct Answer: C) Dark purple ( ph14). 38. Which method is used to prepare lead (II) chloride? A) Pb(NO$_{3}$)$_{2}$(aq) + NaCl (aq) $\rightarrow$. B) PbSO$_{4}$(s)+ NaCl (aq) $\rightarrow$. C) PbCO$_{3}$(s) + NaCl (aq) $\rightarrow$. D) None of the above. Show Answer Correct Answer: A) Pb(NO$_{3}$)$_{2}$(aq) + NaCl (aq) $\rightarrow$. 39. A solution turns green in a china rose indicator. What can we say about the solution? A) The solution is neutral in nature.(A). B) The solution is acidic nature.(B). C) The solution is basic in nature.(C). D) (A) AND (B). Show Answer Correct Answer: C) The solution is basic in nature.(C). 40. Which of the following method is used to prepare magnesium carbonate? A) Acid reacting with excess insoluble solid. B) Alkali reacting with ammonium salt. C) Precipitation. D) Titration. Show Answer Correct Answer: C) Precipitation. 41. Bryan wants to prepare potassium sulfate by reacting an acid with potassium hydroxide. Name the acid used in this experiment. A) Hydrochloric acid. B) Nitric acid. C) Sulfuric acid. D) None of the above. Show Answer Correct Answer: C) Sulfuric acid. 42. Give an example of an indicator. A) Calculator. B) Pencil. C) Litmus paper. D) Ruler. Show Answer Correct Answer: C) Litmus paper. 43. Jika diketahui pH (NH$_{4}$)$_{2}$SO$_{4}$ = 5, Kb NH$_{4}$OH = 10$^{-5}$, dan Mr (NH$_{4}$)$_{2}$SO$_{4}$= 132, massa amonium sulfat yang harus dilarutkan dalam 250 mL air adalah ..... A) 4, 125. B) 3, 300. C) 0, 825. D) 2, 475. E) 1, 650. Show Answer Correct Answer: E) 1, 650. 44. Which of the following reagents can be used to make a sample of lead sulphate? A) Lead chloride. B) Lead carbonate. C) Lead nitrate. D) None of the above. Show Answer Correct Answer: C) Lead nitrate. 45. What two substances must combine to make a acidic salt A) Strong acid and strong base. B) Strong acid and weak base. C) Weak acid and strong base. D) Weak acid and weak base. Show Answer Correct Answer: B) Strong acid and weak base. 46. What salt will be created if there are ions fe $^{2+} $ and $ {4} $$^{3-} $ A) Fe$_{3}$(PO$_{4}$)$_{2}$. B) FeP $ _ {4} $. C) Fe(PO$_{4}$)$_{2}$. D) Fe$_{3}$PO4. Show Answer Correct Answer: A) Fe$_{3}$(PO$_{4}$)$_{2}$. 47. Common salt formula is A) Nahda. B) NaCl. C) H2So4. D) NaOh. Show Answer Correct Answer: B) NaCl. 48. Potassium hydroxide is ..... base A) Strong. B) Weak. C) Both. D) None of the above. Show Answer Correct Answer: A) Strong. 49. Ammonium nitrate manufacturing of fertilizers and explosives A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 50. Lemon contains Ascorbic Acid A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 51. Which of the following is insoluble? A) Ammonium chloride. B) Silver chloride. C) Potassium chloride. D) Zinc chloride. Show Answer Correct Answer: B) Silver chloride. 52. State whether the following compound is soluble or insoluble. Zinc hydroxide Zn(OH)$_{2}$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insoluble. 53. A red litmus paper is dipped in a solution. The colour of the litmus becomes blue. what is the nature of the solution A) Basic. B) Neutral. C) None of these. D) Acidic. Show Answer Correct Answer: A) Basic. 54. Which of these are insoluble? A) Most Sulphates. B) Most Halides. C) Most Nitrates. D) Most Carbonates. Show Answer Correct Answer: D) Most Carbonates. 55. The chemical name of marble is- A) Calcium sulphate. B) Calcium carbonate. C) Calcium chloride. D) Magnesium carbonate. Show Answer Correct Answer: B) Calcium carbonate. 56. What is the colour of FeSO$_{4}$.6H$_{2}$O A) WHITE. B) BLUE. C) PINK. D) GREEN. Show Answer Correct Answer: D) GREEN. 57. Which two things can be used to form salts? A) Charges and pH. B) Bases and pH. C) Acids and pH. D) Acids and bases. Show Answer Correct Answer: D) Acids and bases. 58. What happens when a litmus is added to an acid solution? A) It turns green. B) It turns blue. C) It turns red. D) It turns yellow. Show Answer Correct Answer: C) It turns red. 59. It is known that the following compounds:1.CAF $ _ {2} $ 2.Fe (no $ _ {3} $) $ _ {2} $ 3.K $ _ {3} $ PO $ _ {4} $ 4.Al $ _ {2} $ s $ _ {3} $ 5.ZNSO $ _ {4} $ Based on the data above, the salt that has a pH <7 is ..... A) 1 and 2. B) 1 and 3. C) 2 dan 5. D) 3 and 4. E) 4 and 5. Show Answer Correct Answer: C) 2 dan 5. 60. State whether the following compound is soluble or insoluble. Lead(II) nitrate PbNO$_{3}$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble. ← 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