This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 46 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the name HC$_{2}$H$_{3}$O$_{2}$? A) Acetate. B) Acetous Acid. C) Acetic Acid. D) Hydroacetic acid. Show Answer Correct Answer: C) Acetic Acid. 2. Name this acid. HClO$_{4}$ A) Chloric acid. B) Perchloric acid. C) Hydrochloric acid. D) Hypochlorous acid. Show Answer Correct Answer: B) Perchloric acid. 3. Values from 0-14 that determine the acidity of a solution A) Punnett Square. B) Matrix. C) PH scale. D) Math number line. Show Answer Correct Answer: C) PH scale. 4. What is the amino acid which contains 2 carboxylic groups? A) Alanine (a)-way. B) Serine (s)-Being. C) Aspartate (D)-Asp. D) Tyrosine (Y)-Tyr. Show Answer Correct Answer: C) Aspartate (D)-Asp. 5. When coiled together, DNA looks like a: A) Single Helix. B) Double Helix. C) Triple Helix. D) Broken Ladder. Show Answer Correct Answer: B) Double Helix. 6. The pH of a substance that is slightly alkaline could be A) 1. B) 5. C) 9. D) 11. Show Answer Correct Answer: C) 9. 7. A solution with a pH value of 9 is considered? A) Acidic. B) Basic. C) Salty. D) Neutral. Show Answer Correct Answer: B) Basic. 8. Which of the following substances is alkaline A) Dishwashing liquid. B) Vinegar. C) Distilled water. D) Milk. Show Answer Correct Answer: A) Dishwashing liquid. 9. Cabbage juice changes color in the presence of other chemicals, and the color it changes depends on the other chemical's pH. We can classify cabbage juice as a(n) ..... A) Reactant. B) Product. C) Indicator. D) Chameleon. Show Answer Correct Answer: C) Indicator. 10. Ethylammonium chloride (CH$_{3}$CH$_{2}$NH$_{3}$Cl) is a A) Weak Acid. B) Weak Base. C) Strong Acid. D) Strong base. Show Answer Correct Answer: A) Weak Acid. 11. Define an acid A) Any compound that increases the number of hydrogen ions when dissolved in water. B) Fruit juice, milk, and water. C) Anything that fits in a beaker and is used in science class where the teacher wants you to use your bare hands. You never have worry about your safety. D) A kind of music traditionally listened to by people around a campfire. Show Answer Correct Answer: A) Any compound that increases the number of hydrogen ions when dissolved in water. 12. What type of acid is in inside of our stomach? A) Citric acid. B) Lactic acid. C) Sulpheric acid. D) Hydrochloric acid. Show Answer Correct Answer: D) Hydrochloric acid. 13. What anion would you find in acetic acid? A) C$_{2}$H$_{3}$O$_{2}$$^{-}$. B) H$^{+}$. C) O$^{-2}$. D) HCO$_{3}$$^{-}$. Show Answer Correct Answer: A) C$_{2}$H$_{3}$O$_{2}$$^{-}$. 14. Which of the following feel soapy on touching? A) Acid. B) Base. C) Salt. D) None of these. Show Answer Correct Answer: B) Base. 15. A weak acid A) Is a concentrated solution. B) Dissociates completely. C) Is a dilute solution of OH ions. D) Partially dissociates. Show Answer Correct Answer: D) Partially dissociates. 16. When naming acids with poly-atomic ions, change "-ite" to: A) -ate. B) -ic. C) -ous. D) -ite. Show Answer Correct Answer: C) -ous. 17. If you have 40 adenine in a DNA molecule, how many thymine can you expect? A) 20. B) 30. C) 40. D) 50. Show Answer Correct Answer: C) 40. 18. Hydrochloric acid (a) A) A. HCl. B) HClO$_{2}$. C) HCLO $ _ {3} $. D) Hclo $ _ {4} $. Show Answer Correct Answer: A) A. HCl. 19. Adenine pairs with A) Thymine only. B) Uracil only. C) Thymine and Uracil. D) Guanine. Show Answer Correct Answer: C) Thymine and Uracil. 20. How would you classify a substance that brightly lights a light bulb and dissociates completely? A) Strong acid/base. B) Weak acid/base. C) Neutral substance. D) Metalloid. Show Answer Correct Answer: A) Strong acid/base. 21. A substance with a pH of 5 is which of the following? A) Acid. B) Base. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Acid. 22. Bases have a pH of A) 7. B) Less than 7. C) More than 7. D) None of the above. Show Answer Correct Answer: C) More than 7. 23. You can eat or drink a base. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Litmus has a ..... colour when mixed with distilled water. A) Mauve. B) Blue. C) Yellow. D) Green. Show Answer Correct Answer: A) Mauve. 25. Deoxyribose sugar is present in A) DNA only. B) RNA only. C) DNA and RNA. D) T-RNA. Show Answer Correct Answer: A) DNA only. ← 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