This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A solution with a pH of 8.6 would be ..... A) Acid. B) Base. C) Neutral. D) Acid and Base. Show Answer Correct Answer: B) Base. 2. Many cleaning solutions are bases. Which of the following is a property of most bases? A) Feels slippery. B) White color. C) Can only be liquid. D) Tastes sour. Show Answer Correct Answer: A) Feels slippery. 3. Which of the following statements about a concentrated acid is correct? A) It can react with copper metal. B) It cannot react with copper(II) oxide. C) It is an acid that fully ionizes in water. D) It must contain hydrogen ions when in aqueous form. Show Answer Correct Answer: D) It must contain hydrogen ions when in aqueous form. 4. Which substance has the lowest pH? A) Milk. B) NaOH. C) Pure water. D) Lemon juice. Show Answer Correct Answer: D) Lemon juice. 5. Which one of these is an acid? A) Salt water. B) Oven cleaner. C) Pure water. D) Vinegar. Show Answer Correct Answer: D) Vinegar. 6. Use the CODON CHART to answer the following question.What amino acid is coded for by the codon CAG? A) Histidine. B) Tyrosine. C) Valine. D) Glutamine. Show Answer Correct Answer: D) Glutamine. 7. Al2O3 reacts with NaOH to form A) Salt and H2. B) Salt and CO2. C) Salt and water. D) None. Show Answer Correct Answer: C) Salt and water. 8. Fill in the blank:- ..... turns colourless when added to an acid. A) Phenolphthalein. B) Methyl orange. C) Litmus paper. D) All of these. Show Answer Correct Answer: A) Phenolphthalein. 9. What is obtained from the solution of acid and base? A) NaCl. B) Sodium hydroxide. C) Citrus. D) None of the above. Show Answer Correct Answer: D) None of the above. 10. Acid is derived from which latin word A) Feranium. B) Potassium. C) Acidus. D) Acrobut. Show Answer Correct Answer: C) Acidus. 11. Which of the following is NOT a name for H+ (H$_{3}$O$^{+}$)? A) Hydronium Ion. B) Hydrogen Ion. C) Hydroxide Ion. D) Proton. Show Answer Correct Answer: C) Hydroxide Ion. 12. What is the chemical name of baking soda? A) Sodium Carbonate. B) Calcium carbonate. C) Sodium bicarbonate. D) Sodium hydroxide. Show Answer Correct Answer: C) Sodium bicarbonate. 13. A substance with a pH of 8 is ..... A) A weak base. B) A weak acid. C) A strong base. D) A strong acid. Show Answer Correct Answer: A) A weak base. 14. Which of the following substances is acidic? A) Baking soda. B) Lemon-lime soda. C) Distilled water. D) Soap. Show Answer Correct Answer: B) Lemon-lime soda. 15. When dissolved in water, bases produce: A) Acids. B) Salts. C) Hydrogen ions. D) Hydroxide ions. Show Answer Correct Answer: D) Hydroxide ions. 16. Nitric acid (a) A) A.HNI3. B) HNO$_{2}$. C) H$_{3}$N. D) H$_{2}$NO$_{4}$. Show Answer Correct Answer: A) A.HNI3. 17. What is the name of HClO$_{3}$? A) Hydrochloric acid. B) Chloric acid. C) Hypochloric acid. D) Chlorous acid. Show Answer Correct Answer: B) Chloric acid. 18. Which of these is not part of a nucleotide? A) Sugar. B) Phosphate. C) Nitrogen base. D) Phospholipid. Show Answer Correct Answer: D) Phospholipid. 19. What is the basic structure of an Amino acid? A) Basic group, aliphatic group, hydrogen and a R side chain. B) Acidic group, amino group, hydrogen and a R side chain. C) Positively charged group, acidic group, hydrogen and an aromatic group. D) Negatively charged group, basic group, hydrogen and an aliphatic group. Show Answer Correct Answer: B) Acidic group, amino group, hydrogen and a R side chain. 20. Cystein is a sulfur containing amino acid and forms a A) Hydrogen bond. B) Not bond. C) K bond. D) S-S bond. Show Answer Correct Answer: D) S-S bond. 21. Which pH level indicates a weak alkali? A) 1-3. B) 4-6. C) 8-11. D) 12-14. Show Answer Correct Answer: C) 8-11. 22. The substance that dissolves the solute in a solution is the ..... A) Solvent. B) Sour. C) Solute. D) Hydrogen ions. Show Answer Correct Answer: A) Solvent. 23. Write the formula of the following compound.Nitrous acid A) HN. B) HNO$_{2}$. C) HNO$_{3}$. D) None of the above. Show Answer Correct Answer: B) HNO$_{2}$. 24. Which is not the product of neutralization process A) Water. B) Heat. C) Salts. D) Sugar. Show Answer Correct Answer: D) Sugar. 25. Which of the following is a Mineral Acid? A) Citric Acid. B) Oxalic Acid. C) Glycolic Acid. D) Sulphuric Acid. Show Answer Correct Answer: D) Sulphuric Acid. ← 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