This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. CsOH A) Acid. B) Base. C) Salt. D) None of the above. Show Answer Correct Answer: B) Base. 2. The following is the neutralization process in the following ..... A) Acid + alkali $\rightarrow$ acid-alkaline solution. B) Acid + alkali $\rightarrow$ salty + water. C) Acid + alkali $\rightarrow$ sodium chloride + hydrogen. D) Acid + alkali $\rightarrow$ neutral solution. Show Answer Correct Answer: B) Acid + alkali $\rightarrow$ salty + water. 3. A base is a compound that releases ..... ios when dissolved in water A) H$^{+}$. B) OH$^{+}$. C) O$^{-}$. D) O$_{2}$$^{-}$. Show Answer Correct Answer: B) OH$^{+}$. 4. Universal indicator is added to a solution. The solution turns purple. The solution contains A) Citric acid. B) Hydrochloric acid. C) Sodium hydroxide solution. D) Only water. Show Answer Correct Answer: C) Sodium hydroxide solution. 5. Which of these compounds is the most soluble in water? A) 1, 2-Propanediol. B) Ethanoic acid. C) Propanol. D) Ethanedioc acid. Show Answer Correct Answer: D) Ethanedioc acid. 6. Acid in car battery: A) Hydrochloric acid. B) Sulfuric acid. C) Acetic acid. D) Carbonic acid. Show Answer Correct Answer: B) Sulfuric acid. 7. Purines: A) Double ringed structures. B) Single ringed structures. C) All the above. D) None of the above. Show Answer Correct Answer: A) Double ringed structures. 8. Which of the following is a strong acid? A) Vinegar (acetic acid). B) Lemon juice (citric acid). C) Hydrochloric acid. D) Carbonic acid. Show Answer Correct Answer: C) Hydrochloric acid. 9. Sodium hydroxide (NaOH) is a A) Weak Acid. B) Weak Base. C) Strong Acid. D) Strong base. Show Answer Correct Answer: D) Strong base. 10. Ammonia is found in many household products, including window cleaner. What is the pH of ammonia? A) It's acidic. B) It's basic. C) It's neutral. D) None of the above. Show Answer Correct Answer: B) It's basic. 11. Acid present in lemon orange A) Citric acid. B) Lactic acid. C) Oxalic acid. D) Malic acid. Show Answer Correct Answer: A) Citric acid. 12. Medicines used for treatment of indigestion A) Antibiotic. B) Antacid. C) Analgesic. D) Antiseptic. Show Answer Correct Answer: B) Antacid. 13. Value of water of water ..... CAL/GM A) 100. B) 540. C) 80. D) 720. Show Answer Correct Answer: B) 540. 14. What is the formula for Sulfurous Acid? A) HSO $ _ {3} $. B) H$_{2}$SO$_{3}$. C) SO$_{3}$. D) H$_{2}$SO$_{4}$. Show Answer Correct Answer: B) H$_{2}$SO$_{3}$. 15. Which is false regarding RNA? A) There are three types of RNA which are mRNA, rRNA, tRNA. B) RNA is longer compared to DNA. C) Thymine in DNA is replaced by uracil in RNA. D) RNA is a single polynucleotide. Show Answer Correct Answer: B) RNA is longer compared to DNA. 16. Which of the following would be classified as an acid according to the Arrhenius definition? A) NaCl. B) CA (OH) 2. C) Hakka. D) Ancient. Show Answer Correct Answer: C) Hakka. 17. Soap is slippery and bitter to the taste. From this description, we can conclude that it is most likely a(n) ..... A) Acid. B) Base. C) All the above. D) None of the above. Show Answer Correct Answer: B) Base. 18. Changes the color of indicators. A) Acids. B) Bases. C) All. D) None of the above. Show Answer Correct Answer: C) All. 19. H$_{2}$C$_{2}$O$_{4}$ A) Carbonic acid. B) Chromic acid. C) Chloric acid. D) Oxalic acid. Show Answer Correct Answer: D) Oxalic acid. 20. China rose indicator turns ..... when added to lemon juice. A) Green. B) Pink. C) Yellow. D) Brown. Show Answer Correct Answer: B) Pink. 21. Tannic acid is found in ..... A) Tears. B) Tea. C) Tomatoes. D) None of the above. Show Answer Correct Answer: B) Tea. 22. Bitter button A) Acids. B) Bases. C) Neutral. D) PH paper. Show Answer Correct Answer: B) Bases. 23. A hydrogen ion, H$^{+}$, is the same as a(n): A) Neutron. B) Electron. C) Proton. D) Hydroxide ion. Show Answer Correct Answer: C) Proton. 24. Which of the following pH numbers indicates a neutral substance? A) 1. B) 5. C) 13. D) 7. Show Answer Correct Answer: D) 7. 25. If the substance is neutral, what would the pH be?11 A) 3. B) 5. C) 7. D) 9. E) 11. Show Answer Correct Answer: C) 7. ← 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 8Class 7 Science Chapter 4 Acids Quiz 9Class 7 Science Chapter 4 Acids Quiz 10Class 7 Science Chapter 4 Acids Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books