This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Acids > Class 10 Science Chapter 2 Acids, Bases And Salts – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 2 Acids, Bases And Salts Quiz 5 (34 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When found in food, acids often taste ..... A) Sour. B) Slippery. C) Bitter. D) Salty. Show Answer Correct Answer: A) Sour. 2. Common name of CaSO$_{4}$ 2H$_{2}$O is ..... A) Epsom Salt. B) Gypsum. C) Blue Vitriol. D) Plaster of Paris. Show Answer Correct Answer: B) Gypsum. 3. On prolong supply of CO$_{2}$ (g) in lime solution (lime-water), it is observed that A) Lime solution changes to gaseous state. B) The colour of lime water becomes black. C) The milkiness of lime water disappears. D) The milkiness of lime water appears. Show Answer Correct Answer: C) The milkiness of lime water disappears. 4. Common salt besides being used in kitchen can also be used as the raw material for making A) Calcium salts. B) Washing soda. C) Slaked lime. D) Plaster of paris. Show Answer Correct Answer: B) Washing soda. 5. The pH of a sample of pure water is 7 at room temperature. What is its pH when a pinch of sodium hydroxide is dissolved in it? A) Less than 7. B) More than 7. C) Equal to 7. D) None of these. Show Answer Correct Answer: B) More than 7. 6. Identify the products, when Ammonium hydroxide reacts with Sulphuric acid. A) Ammonium sulphate and water. B) Ammonium nitrate and Sulpuric acid. C) Ammonium sulphate and ammonium sulphate. D) Water. Show Answer Correct Answer: A) Ammonium sulphate and water. 7. Which one of the following statements about strong acids is TRUE? A) The conjugate base of a strong acid is a strong base. B) Strong acids are very concentrated acids. C) Strong acids are 100% ionized in water. D) Strong acids produce solutions with a higher pH than weak acids. Show Answer Correct Answer: C) Strong acids are 100% ionized in water. 8. How are metal oxides formed? A) When metals react with oxide. B) When metals react with oxygen. C) When metals react with water. D) When metals react with air. Show Answer Correct Answer: B) When metals react with oxygen. 9. Which of the aqueous solutions has highest pH value? A) Potassium carbonate. B) Copper sulphate. C) Ammonium chloride. D) Sodium chloride. Show Answer Correct Answer: A) Potassium carbonate. 10. Acids are proton donors and bases are proton acceptors. This is according to: A) Arrhenius theory. B) Henry's Law. C) Lowry Bronsted's theory. D) None of the above. Show Answer Correct Answer: C) Lowry Bronsted's theory. 11. What are the substances used to test whether another substance is acidic or basic in nature? A) Spoon. B) Indicators. C) Bases. D) Acids. Show Answer Correct Answer: B) Indicators. 12. Bases are sour in taste. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. The organic acid present in tomato is A) Oxalic Acid. B) Lactic acid. C) Malic acid. D) Tartaric acid. Show Answer Correct Answer: A) Oxalic Acid. 14. When a drop of unknown solution X is placed on a strip of pH paper, a deep red colour is produced. Identify the unknown solution. A) Water. B) Acetic acid. C) Sodium hydroxide. D) Hydrochloric acid. Show Answer Correct Answer: D) Hydrochloric acid. 15. Naturally occurring acids that are found in plants and animals are called ..... A) Organic acids. B) Mineral acids. C) Both. D) None. Show Answer Correct Answer: A) Organic acids. 16. Guava contains ..... acid. A) Citric acid. B) Lactic acid. C) Carbonic acid. D) Oxalic acid. Show Answer Correct Answer: D) Oxalic acid. 17. Acetic acid was added to a solid X kept in a test tube. A colorless and odourless gas was evolved turned limewater milky A) Solid X is sodium acetate and the gas evolved is CO$_{2}$. B) Solid X is sodium bicarbonate and the gas evolved is CO$_{2}$. C) Solid X is sodium hydroxide and the gas evolved is CO$_{2}$. D) Solid X is sodium chloride and the gas evolved is CO$_{2}$. Show Answer Correct Answer: B) Solid X is sodium bicarbonate and the gas evolved is CO$_{2}$. 18. What type of acid helps us digest our food everyday? A) Acidic Acid. B) Lactic Acid?. C) Tartaric Acid. D) Hydrochloric Acid. Show Answer Correct Answer: D) Hydrochloric Acid. 19. Methyl orange is A) Yellow in acidic medium, pink in basic medium. B) Pink in acidic medium, yellow in basic medium. C) Pink in acidic medium, colourless in basic medium. D) Colourless in acidic medium, pink in basic medium. Show Answer Correct Answer: B) Pink in acidic medium, yellow in basic medium. 20. What is the molarity of a solution containing 400 g of CuSO$_{4}$ (FM:159.6 g/mol) in 4.0 L of solution? A) 1.6 M. B) 0.626 M. C) 0.01 M. D) 100 M. Show Answer Correct Answer: B) 0.626 M. 21. Which of the following is NOT a strong acid? A) H$_{2}$SO$_{}$4$_{}$. B) HCl. C) HClO5. D) HNO$_{3}$. Show Answer Correct Answer: C) HClO5. 22. What would the molarity of a solution be if you took 10 mL of a 13M stock solution and made a 300 mL solution? A) 390 m. B) 0.43 m. C) 0.26M. D) 230M. Show Answer Correct Answer: B) 0.43 m. 23. It removes grease stains from clothes: A) Aluminium Hydroxide. B) Magnesium Hydroxide. C) Calcium Hydroxide. D) Ammonium Hydroxide. Show Answer Correct Answer: D) Ammonium Hydroxide. 24. What is the name of the acid King of chemicals? A) Carbonic acid. B) Nitric acid. C) Hydrochloride acid. D) Sulfuric acid. Show Answer Correct Answer: D) Sulfuric acid. 25. Antacids are used ..... A) To neutralize excess acid in the stomach. B) To neutralize excess base in the stomach. C) To produce acid in the stomach. D) To produce water in the stomach. Show Answer Correct Answer: A) To neutralize excess acid in the stomach. 26. To protect tooth decay we are advised to brush our teeth regurlarly.The toothpaste is A) Neutral. B) Basic. C) Acidic. D) Corrosive. Show Answer Correct Answer: B) Basic. 27. The base which is not an alkali is: A) NH4OH. B) NaOH. C) With (oh) 2. D) KOH. Show Answer Correct Answer: C) With (oh) 2. 28. The Ph of a solution of HCL is 4. This shows that the molarity of the solution is A) 0.chm. B) 0.0001M. C) 0.001m. D) 4.0m. Show Answer Correct Answer: D) 4.0m. 29. Identify the products of the following reaction:CaCO3 + 2HCl ..... > A) Calcium hydrogen carbonate and chlorine gas. B) Calcium chloride and water. C) Calcium oxide, carbon dioxide and water. D) Calcium chloride, carbon dioxide and water. Show Answer Correct Answer: D) Calcium chloride, carbon dioxide and water. 30. What can be applied to neutralise an ant's sting? A) Ammonium Hydroxide. B) Milk of Magnesia. C) Lime Water. D) Calamaline Solution. Show Answer Correct Answer: D) Calamaline Solution. 31. Which of the following acid is present in sour milk? A) Citrus acid. B) Tartaric acid. C) Glycolic acid. D) Lactic acid. Show Answer Correct Answer: D) Lactic acid. 32. What is made when a proton reacts with a hydroxide ion? A) A salt. B) An alkali. C) An acid. D) Water. Show Answer Correct Answer: D) Water. 33. Which of the foll statement is not correct and CO2 A) All metal carbonates react with acid to give a salt, water and CO2. B) All metal oxides react with water to give salt and acid. C) Some metals react with acids to give salt and H2. D) Some non metal oxides react with water to form an acid. Show Answer Correct Answer: B) All metal oxides react with water to give salt and acid. 34. A universal indicator is a: A) Solution of phenolphthalein. B) Solution of methyl orange. C) Solution of methyl orange and phenolphthalein. D) Mixture of many indicators. Show Answer Correct Answer: D) Mixture of many indicators. ← PreviousRelated QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 2 Acids, Bases And Salts Quiz 1Class 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 4 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books