This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Acids > Class 10 Science Chapter 2 Acids, Bases And Salts – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 2 Acids, Bases And Salts Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The deliquescent salt from the following is: A) KCl. B) Zncl2. C) Cuso4.5h2o. D) MgSO4. Show Answer Correct Answer: B) Zncl2. 2. An aqueous solution of NaCl can turn red litmus into- A) Blue. B) Color remains same that is red. C) Changed to purple. D) None. Show Answer Correct Answer: B) Color remains same that is red. 3. A substance is found to have the following characteristics:Very bitter tasteFeels soapy to the touchProduces OH$^{-}$ ions when dissolved in waterIn what category would the substance be classified? A) Acid. B) Base. C) All the above. D) None of the above. Show Answer Correct Answer: B) Base. 4. Metals form ..... oxides A) Basic. B) Acidic. C) Neutral. D) None. Show Answer Correct Answer: A) Basic. 5. Sodium carbonate is a basic salt because it is a salt of a A) Strong acid and strong base. B) Weak acid and weak base. C) Strong acid and weak base. D) Weak acid and strong base. Show Answer Correct Answer: D) Weak acid and strong base. 6. Which of the following reactions produces calcium oxide? A) Calcium and oxide. B) Calcium and water. C) Calcium and air. D) Calcium and oxygen. Show Answer Correct Answer: D) Calcium and oxygen. 7. Colour of methyl orange indicator in acidic medium is ..... A) Orange. B) Red. C) Yellow. D) Green. Show Answer Correct Answer: B) Red. 8. A:Baking powder is used in making cake instead of using baking soda.R:Baking powder contains tartaric acid which reacts with sodium carbonate and removes the bitter taste. A) Both A & R are true and R is the correct explanation of A. B) Both A & R are true and 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 & R are true and R is the correct explanation of A. 9. The ..... show different colours in an acidic and in basic medium. A) Indicator. B) Lemon juice. C) Acetic acid. D) None. Show Answer Correct Answer: A) Indicator. 10. The pH of the gastric juices released during digestion is- A) Equal to 0. B) Less than 7. C) More than 7. D) Equal to 7. Show Answer Correct Answer: B) Less than 7. 11. Which of the following indicators is an olfactory indicator? A) Turmeric. B) Litmus. C) Vanilla. D) Phenolphthalein. Show Answer Correct Answer: C) Vanilla. 12. Potassium carbonate reacts with an acid Y to form potassium nitrate, water and carbon dioxide. What is the acid used for this reaction? A) HNO$_{3}$. B) H$_{2}$SO$_{4}$. C) HCl. D) None of the above. Show Answer Correct Answer: A) HNO$_{3}$. 13. Assertion:Litmus is a natural indicatorReason:Litmus is taken from lichen plant A) Both assertion and reason are true and reason is correct explanation of assertion. B) Both assertion and reason are false. C) Assertion is false and reason is true. D) Assertion is true and reason is false. Show Answer Correct Answer: A) Both assertion and reason are true and reason is correct explanation of assertion. 14. Which of the following substances will not give out carbon dioxide on treatment with dilute acid? A) Sodium hydroxide. B) Baking soda. C) Marble. D) Limestone. Show Answer Correct Answer: A) Sodium hydroxide. 15. Which of the following salts does not contain water of crystallization? A) Baking soda. B) Washing soda. C) Copper sulphate. D) Gypsum. Show Answer Correct Answer: A) Baking soda. 16. PH of blood is about A) 9. B) 8.2. C) 7.4. D) 7. Show Answer Correct Answer: C) 7.4. 17. Which one of the following is given to a person who suffers from acidity to get relief from it? A) Carbonated water. B) Vinegar. C) Baking soda. D) Lime juice. Show Answer Correct Answer: C) Baking soda. 18. When acids react with metal carbonate they give- A) Salt + H2O + CO2. B) Salt. C) Hydronium ion + Salt. D) CO2. Show Answer Correct Answer: A) Salt + H2O + CO2. 19. In terms of acidic strength, which one of the following is in the correct increasing order? A) Water < Hydrochloric acid < Acetic acid. B) Hydrochloric acid < Water < Acetic acid. C) Acetic acid < Water < Hydrochloric acid. D) Water < Acetic acid < Hydrochloric acid. Show Answer Correct Answer: D) Water < Acetic acid < Hydrochloric acid. 20. The difference between a strong and weak acid is: A) Strong acids stay intact in water weak acids don't. B) Strong acids are slippery weak acids aren't. C) Strong acids break apart in water. Weak acids stay intact. D) Weak acids break apart in water most of the time, strong acids do all of the time. Show Answer Correct Answer: C) Strong acids break apart in water. Weak acids stay intact. 21. Acids are substance which will produce A) OH$^{-}$ ions. B) H$_{3}$0$^{+}$ ions. C) Both. D) None. Show Answer Correct Answer: B) H$_{3}$0$^{+}$ ions. 22. Which oxide is able to react with HNO$_{3}$? A) MgO. B) CO$_{2}$. C) NO$_{2}$. D) CO. Show Answer Correct Answer: A) MgO. 23. Found in vinegar A) Acetic acid. B) Sulphuric acid. C) Tartaric acid. D) Carbonic acid. Show Answer Correct Answer: A) Acetic acid. 24. Which is NOT an amphoteric oxide? A) Zinc oxide. B) Sodium oxide. C) Lead (II) oxid. D) Aluminium oxide. Show Answer Correct Answer: B) Sodium oxide. 25. Indicators change color in the presence of a(n) ..... A) Buffer. B) Water molecule. C) Ester. D) Acid or base. Show Answer Correct Answer: D) Acid or base. 26. Tooth enamel is made up of A) Calcium oxide. B) Calcium phosphate. C) Calcium carbonate. D) Potassium. Show Answer Correct Answer: B) Calcium phosphate. 27. Acidic salts are made up of ..... acid and ..... base, respectively. A) Strong, weak. B) Strong, strong. C) Weak, strong. D) Weak, weak. Show Answer Correct Answer: A) Strong, weak. 28. Calcium sulphate hemi hydrate is gypsum A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 29. An aqueous solution turns red litmus blue, excess addition of which of the following would reverse the change? A) HCL. B) Lime. C) Ammonium hydroxide solution. D) Baking powder. Show Answer Correct Answer: A) HCL. 30. Sodium hydrogen carbonate when added to acetic acid evolves a gas.which of the statement is true about the gas evolved A) It changes the soln colorless. B) It turns lime water milky. C) It burns with a pop sound. D) It has a pungent smell. Show Answer Correct Answer: B) It turns lime water milky. 31. Which of the following is not a mineral acid? A) Hydrochloric acid. B) Nitric acid. C) Citric acid. D) Sulphuric acid. Show Answer Correct Answer: C) Citric acid. 32. Acid secreted by our body (stomach) for digestion of food is- A) Dilute Acetic acid. B) Concentrated Hydrochloric acid. C) Concentrated Sulphuric acid. D) Dilute Hydrochloric acid. Show Answer Correct Answer: D) Dilute Hydrochloric acid. 33. Acid in your stomach is: A) Sulfuric acid. B) Hydrochloric acid. C) Citric acid. D) Nitric acid. Show Answer Correct Answer: B) Hydrochloric acid. 34. Complete the definition below:Acids are ..... A) Hydrogen acceptors. B) Proton acceptors. C) Hydrogen donors. D) Proton donors. Show Answer Correct Answer: D) Proton donors. 35. A base has a ..... taste. A) Bland. B) Salty. C) Bitter. D) Sour. Show Answer Correct Answer: C) Bitter. 36. Which one of the following will turn red litmus blue? A) Soft drinks. B) Lemon juice. C) Vinegar. D) Baking soda solution. Show Answer Correct Answer: D) Baking soda solution. 37. Hydrochloric acid A) HCLO $ _ {3} $. B) $ _ {Hclo} $. C) H$_{3}$ClO$_{3}$. D) HCl. Show Answer Correct Answer: D) HCl. 38. How many mL of stock solution of 2M NaCl do you need to prepare 100 mL of 0.150M NaCl? A) 7.5 mL. B) 1333 mL. C) 200 mL. D) 15 mL. Show Answer Correct Answer: A) 7.5 mL. 39. Acids which dissociate almost completely in aqueous solutions are known as: A) Concentrated acids. B) Dilute acids. C) Strong acids. D) Weak acids. Show Answer Correct Answer: C) Strong acids. 40. During preparation of HCL gas on a humid day the gas is usually passed through the guardtube containing calcium chloride.The role of calcium chloride is A) Moisten the gas. B) Absorb the evolved gas. C) Absorb CL ions from the evolved gas. D) Absorb moisture from the gas. Show Answer Correct Answer: D) Absorb moisture from the gas. 41. In a neutralization reaction, what are the products of a reaction between an acid and a base? A) Another acid and base. B) Carbon dioxide and a salt. C) Water and a salt. D) Either two acids or two bases. Show Answer Correct Answer: C) Water and a salt. 42. Identify the element-a) It is a white translucent solid.b) It readily reacts with water and produces an alkaline solution. c) It is stored in kerosene A) Phosphorus. B) Sodium. C) Calcium. D) Aluminium. Show Answer Correct Answer: B) Sodium. 43. Which gas is produced when metal carbonate reacts with acids? A) Hydrogen. B) Nitrogen. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: A) Hydrogen. 44. To relieve pain due to acidity, we can take A) Lemon juice. B) Milk of magnesia. C) Orange juice. D) Sour milk. Show Answer Correct Answer: B) Milk of magnesia. 45. A neutral substance would have pH of ..... A) 8. B) 7. C) 6. D) 14. Show Answer Correct Answer: B) 7. 46. TRUE OR FALSE:Alkalis are a sub group in the large family of bases. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 47. Fizzy drinks (soda) contain: A) Sulfuric acid. B) Carbonic acid. C) Nitric acid. D) Hydrochloric acid. Show Answer Correct Answer: B) Carbonic acid. 48. Hydrogen chloride gas turns the blue litmus red. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 49. We should never add water to acid because: A) The reaction is exothermic. B) The reaction is endothermic. C) The reaction doesn't take place. D) The reaction is slow. Show Answer Correct Answer: A) The reaction is exothermic. 50. CuO + (X) ..... > CuSO$_{4}$ + H$_{2}$O. Here (X) is- A) HNO$_{3}$. B) CuSO $ _ {4} $. C) HCl. D) H$_{2}$SO$_{4}$. Show Answer Correct Answer: D) H$_{2}$SO$_{4}$. 51. What is the range of pH values in a basic solution? A) 8-14. B) 7. C) 0-14. D) 0-6. Show Answer Correct Answer: A) 8-14. 52. What is a titration? A) When the moles of hydrogen ions is equal to the moles of hydroxide ions. B) Adding a known amount of solution of known concentration to determine the concentration of an unknown. C) Reaction in which an acid and a base react in an aqueous solution to produce a salt and water. D) The extent of ionization of an acid or base. Show Answer Correct Answer: B) Adding a known amount of solution of known concentration to determine the concentration of an unknown. 53. The formula of Epsom salt is A) Mg(OH)2. B) MgSO4. C) MgCl2. D) MgCO3. Show Answer Correct Answer: B) MgSO4. 54. The oxidation number of N in NH$_{3}$ is x The oxidation number of Cr in K$_{2}$Cr$_{2}$O$_{7}$ is y; Then x + y =? A) 5. B) 6. C) 9. D) 3. Show Answer Correct Answer: D) 3. 55. Which of the following is acidic in nature? A) Lime water. B) Antacid. C) Lime Juice. D) Human blood. Show Answer Correct Answer: C) Lime Juice. 56. Ca(OH)2 is caustic lime and is a(n) ..... A) Acid. B) Base. C) Acid or base. D) Buffer. Show Answer Correct Answer: B) Base. 57. Which indicator is colourless in acid and pink in alkali? A) Litmus. B) Phenolphthalein. C) Universal Indicator. D) Methyl Orange. Show Answer Correct Answer: B) Phenolphthalein. 58. Acidic solutions exhibit a higher ratio of H$_{3}$O$^{+}$ ions, known as ..... A) Hydroxide. B) Electrons. C) Neutrons. D) Hydronium. Show Answer Correct Answer: D) Hydronium. 59. Nitric acid is considered to be a: A) Weak acid. B) Strong alkali. C) Hydag. D) Oxyacid. Show Answer Correct Answer: D) Oxyacid. 60. The colour of neutral litmus solution is A) Red. B) Purple. C) Yellow. D) Blue. Show Answer Correct Answer: B) Purple. Next →Related QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 2 Acids, Bases And Salts Quiz 2Class 10 Science Chapter 2 Acids, Bases And Salts Quiz 3Class 10 Science Chapter 2 Acids, Bases And Salts Quiz 4Class 10 Science Chapter 2 Acids, Bases And Salts Quiz 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books