This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Accepts a pair of electrons A) Lewis Acid. B) Arrhenius Acid. C) Bronsted Lowry Acid. D) Arrhenius Base. Show Answer Correct Answer: A) Lewis Acid. 2. Which substance is acid? A) Ammonia. B) Toothpaste. C) Vinegar. D) Soap. Show Answer Correct Answer: C) Vinegar. 3. Organic acids occur chemically in animal and plant materials A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Turmeric stain in clothes when washed with soap or detergent turns A) Green. B) Yellow. C) Blue. D) Red. Show Answer Correct Answer: D) Red. 5. Bases are located where on the pH scale? A) Any number can be a base. B) Below 7. C) Above 7. D) Number 7 is a base. Show Answer Correct Answer: C) Above 7. 6. Acids Which are commonly used in laboratories are called ..... A) Minaral Acids. B) Natural Acids. C) Organic Acids. D) Man-Made Acids. Show Answer Correct Answer: A) Minaral Acids. 7. Which formula is for hydrochloric acid A) HCl. B) H$_{2}$Cl. C) H$_{2}$SO$_{4}$. D) HNO$_{3}$. Show Answer Correct Answer: A) HCl. 8. The process of using the information in mRNA to make a protein is know as- A) Exocytosis. B) Endocytosis. C) Translation. D) Transcription. Show Answer Correct Answer: C) Translation. 9. Forms a OH-hydroxide ion A) Lewis Base. B) Arrhenius Base. C) Bronsted Lowry Base. D) Bronsted Lowry Acid. Show Answer Correct Answer: B) Arrhenius Base. 10. Used to increase the taste of food ..... A) Sodium chloride. B) Hydrogen chloride. C) Cooking soda. D) Baking soda. Show Answer Correct Answer: A) Sodium chloride. 11. Lactic acid present high value in A) Milk. B) Curd. C) Tamarind. D) Water. Show Answer Correct Answer: A) Milk. 12. Which property does hydrochloric acid have? A) It liberates ammonia from ammonium salts. B) It reacts with any base to give a salt. C) It reacts with any metal to give hydrogen. D) It turns red litmus paper blue. Show Answer Correct Answer: B) It reacts with any base to give a salt. 13. According to the Bronsted-Lowry definition, an acid is a proton ..... while a base is a proton ..... A) Donor;accept. B) Accept;donor. C) User; creator. D) User; eliminator. Show Answer Correct Answer: A) Donor;accept. 14. What is the difference in hydrogen ion concentration between a pH of 3 and a pH of 6? A) A pH of 3 has a hydrogen ion concentration that is 3 times greater than a pH of 6. B) A pH of 3 has a hydrogen ion concentration that is 30 times smaller than a pH of 6. C) A pH of 3 has a hydrogen ion concentration that is 30 times greater than a pH of 6. D) A pH of 3 has a hydrogen ion concentration that is 1000 times greater than a pH of 6. Show Answer Correct Answer: D) A pH of 3 has a hydrogen ion concentration that is 1000 times greater than a pH of 6. 15. Which of these solutions is an acid? A) Dish Soap:pH of 12. B) Tomato Soup:pH of 4. C) Baking Soda:pH of 9. D) Drain Cleaner:pH of 14. Show Answer Correct Answer: B) Tomato Soup:pH of 4. 16. The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino acids are coded for by this message? A) 4. B) 8. C) 12. D) 20. Show Answer Correct Answer: A) 4. 17. Name this compound:Li$_{2}$SO$_{3}$ A) Lithium sulfate. B) Lithium sulfite. C) Lithium sulfide. D) Lithium (I) suflite. Show Answer Correct Answer: B) Lithium sulfite. 18. Accepts a proton (H+ hydrogen ion) A) Lewis Base. B) Arrhenius Base. C) Bronstead Lowry Base. D) Lewis Acid. Show Answer Correct Answer: C) Bronstead Lowry Base. 19. The color of the Finaptian index in alkaline solvents A) Yellow. B) Green. C) Orange. D) Pink. Show Answer Correct Answer: D) Pink. 20. Bases taste A) Sweet. B) Sour. C) Bitter. D) Salty. Show Answer Correct Answer: C) Bitter. 21. Which base is only found in RNA? A) Uracil. B) Thymine. C) Adenine. D) Guanine. Show Answer Correct Answer: A) Uracil. 22. An acid in water solution tastes ..... A) Bitter. B) Sour. C) Spicy. D) Tasteless. Show Answer Correct Answer: B) Sour. 23. Potassium hydroxide A) KOH. B) K2OH. C) K(OH)2. D) None of the above. Show Answer Correct Answer: A) KOH. 24. Which of the following is a characteristic of a base? A) Bitter. B) Sour. C) Corrosive. D) Releases hydrogen ions in water. Show Answer Correct Answer: A) Bitter. 25. Which of the following is used in antacids? A) Sodium hydroxide. B) Potassium hydroxide. C) Magnesium hydroxide. D) Ammonium hydroxide. Show Answer Correct Answer: C) Magnesium hydroxide. ← 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