This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Salts > Class 7 Science Chapter 4 Salts – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Is China Rose an Natural Indicator? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 2. Which acid is present in tea A) Tannic acid. B) Glycolic acid. C) All the above. D) None of the above. Show Answer Correct Answer: A) Tannic acid. 3. Silver Chloride, AgCl A) Soluble Salt. B) Insoluble Salt. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insoluble Salt. 4. What is used to preserve pickles, sauce, ketchups? A) Milk. B) Vinegar. C) Salt. D) Acid. Show Answer Correct Answer: B) Vinegar. 5. Zinc Chloride, ZnCl$_{2}$ A) Soluble Salt. B) Insoluble Salt. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble Salt. 6. Methyle orange colour in base A) Red. B) Pink. C) Yellow. D) Colourless. Show Answer Correct Answer: C) Yellow. 7. Which of the following is a common use of salts in daily life? A) As a metal polish. B) As a fuel. C) As a cleaning agent. D) As a food preservative. Show Answer Correct Answer: D) As a food preservative. 8. Name of acid present in VINEGAR A) Lactic acid. B) Citric acid. C) Acetic acid. D) Formic acid. Show Answer Correct Answer: C) Acetic acid. 9. Between the following solutions that can form hydrolyzed salt solutions and are acidic are ..... A) 20 mL Ca(OH)2 0, 1 M + 20 mL HCl 0, 1 M. B) 20 mL CH3COOH 0, 1 M + 20 mL KOH 0, 2 M. C) 20 mL H2SO4 0, 1 M + 20 mL Ba(OH)2 0, 1 M. D) 20 mL NH4OH 0, 1 M + 20 mL HCl 0, 1 M. E) 20 ml HCN 0.1 m + 20 ml NaOH 0.1 m. Show Answer Correct Answer: D) 20 mL NH4OH 0, 1 M + 20 mL HCl 0, 1 M. 10. ACID RAINS ARE DUE TO? A) Ill. B) NO2. C) CO2. D) ALL THE ABOVE. Show Answer Correct Answer: D) ALL THE ABOVE. 11. We should add acid to water while diluting. A) Yes. B) No. C) We should add water to acid while diluting. D) None of the above. Show Answer Correct Answer: A) Yes. 12. Aqua regia is for A) Descaling. B) Disolve noble metals. C) All the above. D) None of the above. Show Answer Correct Answer: B) Disolve noble metals. 13. Sodium bromide / natrium bromida A) Sodium hydroxide + hydrobromic acid sodium hydroxide + acid hydrobromic. B) Sodium sulphate + potassium bromideNatrium sulfat + kalium bromida. C) Sodium + hydrobromic acid Natrium + asid hidrobromik. D) None of the above. Show Answer Correct Answer: A) Sodium hydroxide + hydrobromic acid sodium hydroxide + acid hydrobromic. 14. Find the Ksp for Ce(IO$_{3}$)$_{3}$ if the solubility of Ce(IO$_{3}$)$_{3}$ in a 0.2 M NaIO$_{3}$ solution is 4.4 x 10$^{-8}$ M A) 3.5 x 10$^{-10}$ M. B) 0.2 M. C) 4.4 x 10$^{-8}$ M. D) 1.3 x 10$^{-7}$ M. Show Answer Correct Answer: A) 3.5 x 10$^{-10}$ M. 15. If two solutions each contain 25 ml of 0.2 m NaOH and 25 ml CH $ _ {3} $ COOH 0.2 M with k $ _ {a} $ ch $ _ {3} $ coh = 10 $^{-5} $ mixed, then the pH is ..... A) 5. B) 3. C) 10. D) 9. E) 4. Show Answer Correct Answer: D) 9. 16. What products when we react an acid with an base? A) Salt + water + hydrogen. B) Salt + water. C) Salt. D) Salt + hydrogen. Show Answer Correct Answer: B) Salt + water. 17. Which method is used to separate the solids produced from the reaction below:NaCl (aq) + AgNO$_{3}$ (aq) $\rightarrow$ AgCl (s) + NaNO$_{3}$ (aq) A) Chromatography. B) Crystallisation. C) Distillation. D) Filtration. Show Answer Correct Answer: D) Filtration. 18. Which of these is used in the glass industry? A) Sodium bicarbonate. B) Sodium Carbonate. C) Sodium Chloride. D) Sodium Hydroxide. Show Answer Correct Answer: B) Sodium Carbonate. 19. Pure rain is slightly acidic due to presence of which acid A) Acetic acid. B) Carbonic acid. C) Amino acid. D) Formic acid. Show Answer Correct Answer: B) Carbonic acid. 20. How do you remove the water to leave solid copper sulfate crystals? A) Filtration. B) Distillation. C) Dissolving. D) Evaporation. Show Answer Correct Answer: D) Evaporation. 21. Neutral salts are formed by the reaction of weak acid and strong base. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 22. Acid can prevent bacteria from growing A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. Calcium hydroxide is the scientific name of A) Lime. B) Soap. C) Lime Water. D) None of the above. Show Answer Correct Answer: C) Lime Water. 24. Which of the following is soluble salt? Which salt is the illegal salt? A) Calcium sulfate / Kalsium sulfat. B) Silver Chloride / Argentum Chloride. C) Barium nitrate / Barium nitrat. D) Lead (ii) sulphate / plumbum (ii) sulfate. Show Answer Correct Answer: C) Barium nitrate / Barium nitrat. 25. Name the acid that is present fire extinguishers. A) Hydrochloric acid. B) Nitric acids. C) Sulphuric acid. D) None of the above. Show Answer Correct Answer: C) Sulphuric acid. 26. Silver chromate, Ag$_{2}$CrO$_{4}$, has a K$_{sp}$ of 8.96 x 10$^{-12}$. Calculate the solubility in mol/L of silver chromate. A) 1.65 x 10$^{-4}$M. B) 2.25 x 10$^{-12}$M. C) 2.08 x 10$^{-4}$M. D) 1.31 x 10$^{-4}$M. Show Answer Correct Answer: D) 1.31 x 10$^{-4}$M. 27. Human body works under a Ph of? A) 7.0-7.7. B) 7.0-8.7. C) 7.0-10.5. D) 7.0-7.8. Show Answer Correct Answer: A) 7.0-7.7. 28. Which of the following is NOT part of the definition of salt? A) When hydrogen ion of an acid. B) Contains hydrogen ions. C) Ionic compound. D) Is replaced by a metal or ammonium ion. Show Answer Correct Answer: B) Contains hydrogen ions. 29. Metal + Water yields ..... A) Metal Hydroxide + Hydrogen. B) A + B. C) Metal Oxide + Hydrogen. D) Metal Oxide. Show Answer Correct Answer: A) Metal Hydroxide + Hydrogen. 30. Bleaching powder acts as A) Oxidizing agent. B) Decolourising agent. C) Reducing agent. D) 1&3. Show Answer Correct Answer: D) 1&3. 31. Acidity is when you measure how strong a(n) ..... solution is. A) Base. B) Acid. C) All the above. D) None of the above. Show Answer Correct Answer: B) Acid. 32. Wasp stings are ..... in nature. It can be neutralized by soaking the infected area in ..... A) ALKALINE, ACID. B) ACIDIC, BASE. C) ACIDIC, ACID. D) BASIC, BASE. Show Answer Correct Answer: A) ALKALINE, ACID. 33. What is injected into the skin when an ant bites? A) Citric acid. B) Formic acid. C) Tamarind. D) Salt. Show Answer Correct Answer: B) Formic acid. 34. The reaction of an acid with a base to form salt and water is called A) Chemical reaction. B) Neutralization. C) Weathering. D) Condensation. Show Answer Correct Answer: B) Neutralization. 35. What elements make up Copper sulphate? CuSO$_{4}$ A) Copper, sulphate. B) Copper, sulphur. C) Copper, sulphur and oxygen. D) Copper and oxygen. Show Answer Correct Answer: C) Copper, sulphur and oxygen. 36. What is the formula for neutralisation? A) HCL + NAOH = NACL + H2O. B) Acig + Naoh = after + H2O. C) Hci + nahp = naci + h2o. D) NapS + nahG = agH + CO2. Show Answer Correct Answer: A) HCL + NAOH = NACL + H2O. 37. Acid + alkali $\rightarrow$ A) Salt + water + carbon dioxide. B) Salt + carbon dioxide. C) Salt + hydrogen. D) Salt + water. Show Answer Correct Answer: D) Salt + water. 38. What is the colour of Lead (II) sulphate? A) White. B) Blue. C) Brown. D) Colourless. Show Answer Correct Answer: A) White. 39. Identify the gas released if a solution of sodium hydrogen carbonate is heated. A) SO$_{2}$. B) H$_{2}$. C) HCO$_{3}$. D) CO$_{2}$. Show Answer Correct Answer: D) CO$_{2}$. 40. State whether the following compound is soluble or insoluble. Aluminium sulfate Al$_{2}$(SO$_{4}$)$_{3}$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble. 41. Acids dissolve in H2O gives- A) H + H2O$\rightarrow$ H3O. B) H+ ions. C) Both 1 and 2. D) None of the above. Show Answer Correct Answer: A) H + H2O$\rightarrow$ H3O. 42. Organic acids are weak acids. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 43. Sodium hydroxide and hydrochloric acid neutralises the effect of each other. Tick the products of neutralization reaction. A) Salt. B) Water. C) Heat. D) All of the above. Show Answer Correct Answer: D) All of the above. 44. Choose the correct answer for chemical equation on acid-base reaction A) Acid + Base gives Salt + Water. B) Acid + Base gives neutral solution. C) HCL + (NaOH) gives (NaCl) + H2O. D) None of them. Show Answer Correct Answer: C) HCL + (NaOH) gives (NaCl) + H2O. 45. If the given solution neither changes the colour of the red litmus nor blue litmus paper, it is ..... A) Neutral. B) A base. C) An Acid. D) Colourless. Show Answer Correct Answer: A) Neutral. 46. If 200 ml NH $ _ {4} $ OH 0.8 m is reacted with 200 ml of 0.8 m HCl solution, KB NH $ _ {4} $ OH = 10 $^{-5} $, the mixture pH after reacting is ..... A) 5-log2. B) 5-log3. C) 5-Log4. D) 5-LOG5. E) 5-Log6. Show Answer Correct Answer: A) 5-log2. 47. Compound potassium hydrogencarbonate is classified as: A) Hydroxide. B) Acidic salt. C) Amphotheric hydroxide. D) None of the above. Show Answer Correct Answer: B) Acidic salt. 48. Aluminum is more reactive than Magnesium. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 49. ..... converts lime water milky. A) O2. B) Co2. C) Ill. D) H2o. Show Answer Correct Answer: B) Co2. 50. Nitric acid turns A) Red litmus blue. B) Blue litmus red. C) All the above. D) None of the above. Show Answer Correct Answer: B) Blue litmus red. 51. Alkalinity is when you measure how strong a ..... solution is. A) Base. B) Acid. C) All the above. D) None of the above. Show Answer Correct Answer: A) Base. 52. Which of the following is Soapy to touch A) Nitric acid. B) Hydrochloric acid. C) Sodium Hydroxide. D) Sulphuric acid. Show Answer Correct Answer: C) Sodium Hydroxide. 53. Which acid is used in the steel industry to remove rust from iron? A) Acetic acids. B) Hydrochloric acids. C) Nitric acids. D) Sulphuric acids. Show Answer Correct Answer: B) Hydrochloric acids. 54. We convert the acidic soil by adding ..... A) Quick lime. B) Slaked lime. C) Calcium oxide. D) All of these. Show Answer Correct Answer: D) All of these. 55. What are the products of neutralisation? A) Acid and a base. B) Water and salt. C) Salt and a base. D) Acid and water. Show Answer Correct Answer: B) Water and salt. 56. Is Turmeric a Natural Indicator? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 57. Name the Acid released by the bite of an Ant A) Oxallic acid. B) Mallic acid. C) Formic acid. D) Citric acid. Show Answer Correct Answer: C) Formic acid. 58. Phenolphthalein turns ..... in Acid. A) Pink. B) Colouless. C) Yellow. D) Red. Show Answer Correct Answer: B) Colouless. 59. Generally, Litmus Paper is available as ..... and ..... colour. A) Yellow and Orange. B) Red and Blue. C) Black And White. D) Pink and Purple. Show Answer Correct Answer: B) Red and Blue. 60. Complete the following word equation:Metal + Acid $\rightarrow$ A) Salt + water. B) Salt + hydrogen. C) Salt + Water + Carbon dioxide. D) None of the above. Show Answer Correct Answer: B) Salt + hydrogen. ← PreviousNext →Related QuizzesScience QuizzesClass 7 QuizzesClass 7 Science Chapter 4 Salts Quiz 1Class 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books