This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 45 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which property do acids have? A) Sour taste. B) Bitter button. C) Slippery. D) None of the above. Show Answer Correct Answer: A) Sour taste. 2. HCl + LiOH $\rightarrow$ LiCl + H$_{2}$OIn the reaction represented by the equation above, which chemical acts as the acid? A) HCl. B) Any otheruce. C) LiCl. D) H$_{2}$O. Show Answer Correct Answer: A) HCl. 3. Which acid is used to preserve food materials? A) Benzoic acid. B) Sulphuric acid. C) Hydrochloric acid. D) Carbonic acid. Show Answer Correct Answer: A) Benzoic acid. 4. Plaster of pairs is made from- A) Lime stone. B) Slaked lime. C) Quick lime. D) Gypsum. Show Answer Correct Answer: D) Gypsum. 5. Given the following sequence of mRNA, what series of amino acids are coded for?mRNA:CUCAAGUGCUUC A) Ser-Tyr-Arg-Gly. B) Val-Asp-Pro-His. C) Leu-Lys-Cys-Phe. D) Pro-GLU-Leu-Val. Show Answer Correct Answer: C) Leu-Lys-Cys-Phe. 6. What is the characteristic functional group of carboxylic acids? A) Carbonyl. B) Hydroxyl. C) Carbon. D) Carboxyl. Show Answer Correct Answer: D) Carboxyl. 7. The repeating units of protein are A) Amino acids. B) Glucose. C) Fatty acid. D) Peptides. Show Answer Correct Answer: A) Amino acids. 8. Substance that is neither acidic nor basic it is said to be ..... A) Acidic. B) Basic. C) Neutral. D) None of the above. Show Answer Correct Answer: C) Neutral. 9. Lemon juice can be used to neutralize a basic solution. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. You should not store acids in ..... A) Plastic containers. B) Metallic containers. C) All the above. D) None of the above. Show Answer Correct Answer: B) Metallic containers. 11. Ammonia has a pH of 12. Ammonia is ..... A) An acid. B) A base. C) An element. D) A metal. Show Answer Correct Answer: B) A base. 12. A glowing splint placed in oxygen gas will A) Do nothing. B) Get wet. C) Relight. D) Cause a squeaky pop. Show Answer Correct Answer: C) Relight. 13. Which gas is liberated when Sodium hydrogen carbonate reacts with an acid? A) Hydrogen. B) Carbondioxide. C) Nitrogen dioxide. D) Sulphur dioxide. Show Answer Correct Answer: B) Carbondioxide. 14. Which one of the following is an example of a base? A) Orange juice. B) Dish soap. C) Vinegar. D) Lemons. Show Answer Correct Answer: B) Dish soap. 15. Sodium hypochlorite (NaOCl) is a A) Weak Acid. B) Weak Base. C) Strong Acid. D) Strong base. Show Answer Correct Answer: B) Weak Base. 16. Taste sour A) Acids. B) Bases. C) Neutral. D) PH scale. Show Answer Correct Answer: A) Acids. 17. The following are the best ..... A) Bleaching powder. B) Hydrogen. C) Carbon. D) Detergent powder. Show Answer Correct Answer: A) Bleaching powder. 18. True or False. Electrolytes e.g. NaCl ionize when dissolved in water, separating into positive and negative ions (charged particles) e.g. Na$^{+}$ and Cl$^{-}$ A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. What is the suffix for carboxylic acids? A) -ic acid. B) -oic acid. C) -oic. D) None of the above. Show Answer Correct Answer: B) -oic acid. 20. Litmus is obtained from ..... A) Lichens. B) Acids. C) Neutrals. D) None of these. Show Answer Correct Answer: A) Lichens. 21. Blue litmus paper is held in dry HCl fume, A) Turn to red. B) Turn to blue. C) Turn to green. D) No change. Show Answer Correct Answer: D) No change. 22. Hydrochloric acid is commonly found in gastric juice. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. A substance that is a 10 on the pH scale would be a(n) ..... A) Acid. B) Neutral. C) Base. D) Indicator. Show Answer Correct Answer: C) Base. 24. Acid present in tamarind A) Lactic acid. B) Acetic acid. C) Tartaric acid. D) Malic acid. Show Answer Correct Answer: C) Tartaric acid. 25. Which of the following statements is most likely to be true of non-polar R groups in aqueous solution? A) They are hydrophillic and found buried within proteins. B) They are hydrophillic and found on protein surfaces. C) They are hydrophobic and found within proteins. D) They are hydrophobic and found on protein surfaces. Show Answer Correct Answer: C) They are hydrophobic and found within proteins. ← PreviousNext →Related QuizzesClass 7 Science Chapter 4 Acids Quiz 1Class 7 Science Chapter 4 Acids Quiz 2Class 7 Science Chapter 4 Acids Quiz 3Class 7 Science Chapter 4 Acids Quiz 4Class 7 Science Chapter 4 Acids Quiz 5Class 7 Science Chapter 4 Acids Quiz 6Class 7 Science Chapter 4 Acids Quiz 7Class 7 Science Chapter 4 Acids Quiz 8Class 7 Science Chapter 4 Acids Quiz 9Class 7 Science Chapter 4 Acids Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books