This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is also called slaked lime A) KOH. B) Ca [oh] $ _ {2} $. C) NaOH. D) NH$_{4}$OH. Show Answer Correct Answer: B) Ca [oh] $ _ {2} $. 2. Which of the following is a characteristic of an acid? A) Bitter. B) Slippery. C) Sour. D) Releases hydroxide ions in water. Show Answer Correct Answer: C) Sour. 3. Litmus paper can be used to determine the ..... of a substance A) Relative volume. B) Relative pH. C) Temperature. D) Chemical formula. Show Answer Correct Answer: B) Relative pH. 4. What is the pH of a solution that results from the complete neutralization of an HCl solution with a KOH solution? A) 1. B) 7. C) 10. D) 4. Show Answer Correct Answer: B) 7. 5. The reaction of metal with acid results in the formation of- A) Only hydrogen gas. B) Only salt. C) Both salt and hydrogen gas. D) None of these. Show Answer Correct Answer: C) Both salt and hydrogen gas. 6. Use the CODON CHART to answer the following question.CCG UUG ACC GCGWhat is the sequence of amino acids that will be translated from the mRNA above? A) Proline-threonine-alanine-luecine. B) Proline-leucine-threonine-alanine. C) Proline-phenylalanine-tyrosine-arginine. D) Arginine-Leucine-Treoinine-Alanine. Show Answer Correct Answer: B) Proline-leucine-threonine-alanine. 7. The value of rain water pH is less than ..... A) 5.6. B) 5.5. C) 1. D) 10. Show Answer Correct Answer: A) 5.6. 8. Which of the following gas will be formed when sodium hydrogencarbonate reacts with dilute hydrochloric acid? A) Hydrogen. B) Carbon dioxide. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: B) Carbon dioxide. 9. Which compound has higher boiling point? A) Pentanoic acid. B) 2-methylbutanoic acid. C) Pentanal. D) Butanoic acid. E) Pentanol. Show Answer Correct Answer: A) Pentanoic acid. 10. A solution with a pH of 3.6 would be ..... A) Acid. B) Base. C) Neutral. D) Acid and Base. Show Answer Correct Answer: A) Acid. 11. Which of the following is formed as a result of neutralisation reaction? A) Acid. B) Base. C) Salt. D) Metals. Show Answer Correct Answer: C) Salt. 12. What are the products in a neutralization (Acids + Bases) reaction? A) H$_{2}$ + Salt. B) H$_{2}$O + Salt. C) H$_{3}$O$^{+}$ + Salt. D) OH$^{-}$ + Salt. Show Answer Correct Answer: B) H$_{2}$O + Salt. 13. The alkali tastes ..... . A) Bitter. B) Wag. C) Sweet. D) As sour. Show Answer Correct Answer: A) Bitter. 14. Which of the following is a Bronsted-Lowry Conjugate acid-base pair. A) HCl and NaOH. B) H$_{3}$O$^{+}$ and OH$^{-}$. C) H$_{2}$SO$_{4}$ and HSO$_{4}$$^{-}$. D) H$_{2}$S and S$^{2-}$. Show Answer Correct Answer: C) H$_{2}$SO$_{4}$ and HSO$_{4}$$^{-}$. 15. To delay the curdling of milk, which of the following base is added to it A) Citric Acid. B) Baking soda. C) Sodium hydroxide. D) Potassium hydroxide. Show Answer Correct Answer: B) Baking soda. 16. An example of acid obtained from mineral is A) Acetic acid. B) Tartaric acid. C) Nitric acid. D) Oxalic acid. Show Answer Correct Answer: C) Nitric acid. 17. What is the pOH of a solution that has a pH of 2? A) 10. B) 12. C) 14. D) 1. Show Answer Correct Answer: B) 12. 18. At what location on the pH scale can you find acids? A) Number 7 on the pH scale is acidic. B) Below 7. C) Above 7. D) You can find acids all throughout the scale. Show Answer Correct Answer: B) Below 7. 19. ..... indicators are substances which have diferent odours in acids and bases A) Universal. B) Olfactory. C) Inorganic. D) Organic. Show Answer Correct Answer: B) Olfactory. 20. Paheli Is suffering from indigestion due to acidity. In this situation, she is advisable to take: A) Curd. B) Lemon juice. C) Milk. D) Milk of magnesia. Show Answer Correct Answer: D) Milk of magnesia. 21. When a drop of vinegar solution is put on the blue litmus paper, it turns A) Red. B) Purple. C) Yellow. D) Orange. Show Answer Correct Answer: A) Red. 22. Products of a neutralization reaction are always: A) An acid and a base. B) An acid and a salt. C) A salt and water. D) A salt and a base. Show Answer Correct Answer: C) A salt and water. 23. ..... acid is present in curd A) Acetic. B) Citric. C) Oleic. D) Lactic. Show Answer Correct Answer: D) Lactic. 24. When more water is added to acid its hydrogen ion concentration increases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. What is the function of ATP in living things? A) Provides energy for cells. B) Stores genetic information. C) Provides structure in the nucleus. D) None of the above. Show Answer Correct Answer: A) Provides energy for cells. ← 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