This quiz works best with JavaScript enabled. Home > Class 10 > 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 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The deliquescent salt from the following is: A) KCl. B) Cuso4.5h2o. C) Zncl2. D) MgSO4. Show Answer Correct Answer: C) 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) Yellow. B) Green. C) Orange. D) Red. Show Answer Correct Answer: D) 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) Less than 7. B) More than 7. C) Equal to 7. D) Equal to 0. Show Answer Correct Answer: A) Less than 7. 11. Which of the following indicators is an olfactory indicator? A) Litmus. B) Vanilla. C) Turmeric. D) Phenolphthalein. Show Answer Correct Answer: B) 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) Marble. B) Limestone. C) Baking soda. D) Sodium hydroxide. Show Answer Correct Answer: D) Sodium hydroxide. 15. Which of the following salts does not contain water of crystallization? A) Copper sulphate. B) Baking soda. C) Washing soda. D) Gypsum. Show Answer Correct Answer: B) Baking soda. 16. PH of blood is about A) 9. B) 7. C) 8.2. D) 7.4. Show Answer Correct Answer: D) 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) Baking soda. C) Vinegar. D) Lime juice. Show Answer Correct Answer: B) Baking soda. 18. When acids react with metal carbonate they give- A) CO2. B) Salt. C) Hydronium ion + Salt. D) Salt + H2O + CO2. Show Answer Correct Answer: D) Salt + H2O + CO2. 19. In terms of acidic strength, which one of the following is in the correct increasing order? A) Water < Acetic acid < Hydrochloric acid. B) Water < Hydrochloric acid < Acetic acid. C) Acetic acid < Water < Hydrochloric acid. D) Hydrochloric acid < Water < Acetic acid. Show Answer Correct Answer: A) Water < Acetic acid < Hydrochloric acid. 20. Mg(OH)$_{2}$ A) Magnesium hydroxide acid. B) Hydromagnesium acid. C) Magnesium oxygen hydride. D) Magnesium hydroxide. Show Answer Correct Answer: D) Magnesium hydroxide. 21. 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. 22. 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. 23. 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. 24. Found in vinegar A) Acetic acid. B) Sulphuric acid. C) Tartaric acid. D) Carbonic acid. Show Answer Correct Answer: A) Acetic acid. 25. Which is NOT an amphoteric oxide? A) Zinc oxide. B) Aluminium oxide. C) Lead (II) oxid. D) Sodium oxide. Show Answer Correct Answer: D) Sodium oxide. 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