This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 36 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Phenophthalein has ..... colur in basic solution. A) Red. B) Pink. C) Yellow. D) Green. Show Answer Correct Answer: B) Pink. 2. Copper oxide + hydrochloric acid $\rightarrow$ A) Copper chloride and water. B) Copper hydroxide and chlorine. C) Copper chloride. D) Copper chloride and hydrogen. Show Answer Correct Answer: A) Copper chloride and water. 3. Identify some foods you eat that you know are high in protein. A) Strawberries. B) Meat. C) Peanuts. D) Water. Show Answer Correct Answer: B) Meat. 4. HCl dissolved in methylbenzene reacts with magnesium to give hydrogen. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. According to Bronsted-Lowry, what does a base do? A) It donates a proton (H$^{+}$). B) It accepts a proton (H$^{+}$). C) It produces H$^{+}$ in water. D) It produces OH$^{-}$ in water. Show Answer Correct Answer: B) It accepts a proton (H$^{+}$). 6. Which of the following is an example of indicator in labs. A) Hibiscus paper. B) Vinegar. C) Turmeric. D) Phenolphthelene. Show Answer Correct Answer: D) Phenolphthelene. 7. When we suffer from acidity, we should take A) Iron tonic. B) Vitamins. C) Antacid. D) Lactocalamine. Show Answer Correct Answer: C) Antacid. 8. Which one of these is an example of an acid? A) Bleach. B) Hand soap. C) Sodium hydroxide. D) Lemon juice. Show Answer Correct Answer: D) Lemon juice. 9. Which substances helped you decide whether or not another substance was an acid or not? A) Salt and pepper. B) Soap and water. C) Baking soda and the purple (black bean) liquid. D) Mustard and soy sauce. Show Answer Correct Answer: C) Baking soda and the purple (black bean) liquid. 10. Acid are a ..... Conductor of Electricity A) Good. B) Inferior. C) Bad. D) Average. Show Answer Correct Answer: A) Good. 11. The colour of litmus in sulfuric acid is: A) Blue. B) Green. C) Purple. D) Red. Show Answer Correct Answer: D) Red. 12. Which among the following is not a property of acids? A) PH is 7. B) Corrosive in nature. C) Conduct electricity. D) Turn blue litmus red. Show Answer Correct Answer: A) PH is 7. 13. Name the acid that is present in fats in our body. A) Formic acid. B) Fatty acid. C) Oxalic acid. D) Methyl orange. Show Answer Correct Answer: B) Fatty acid. 14. The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is A) Neutral. B) Basic. C) Acidic or basic. D) Acidic. Show Answer Correct Answer: B) Basic. 15. When the pH of your pool is too high, algae and bacteria can flourish, what do you need to add to lower it A) Salt (e.g. sodium chloride). B) Chlorine. C) Hydrochloric acid. D) Sodium carbonate. Show Answer Correct Answer: C) Hydrochloric acid. 16. Most foods would be considered A) Bases. B) Acids. C) Neutral. D) None of the above. Show Answer Correct Answer: B) Acids. 17. What sugar is found in RNA? A) Ribose. B) Deoxyribose. C) Glucose. D) Galactose. Show Answer Correct Answer: A) Ribose. 18. These acids are correctly matched with its system in human body, except: A) Hydrochloric acid-digestive system. B) Lactic acid-circulatory system. C) Uric acid-excretory system. D) None of the above. Show Answer Correct Answer: B) Lactic acid-circulatory system. 19. Nitric acid reacts with metals to make which type of salt? A) Nitrite. B) Nitrate. C) Nitroxide. D) Knitting patterns. Show Answer Correct Answer: B) Nitrate. 20. Are both acids and alkalis corrosive? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 21. Lead (II) phosphate A) PbPO$_{4}$. B) Pb$_{2}$PO$_{4}$. C) Pb$_{3}$(PO$_{4}$)$_{2}$. D) PB2 ($ _ {4} $) $ _ {3} $. Show Answer Correct Answer: C) Pb$_{3}$(PO$_{4}$)$_{2}$. 22. Barium hydroxide A) Baoh. B) Strongly. C) Ba (oh) 2. D) None of the above. Show Answer Correct Answer: C) Ba (oh) 2. 23. Name the following acid:HBr A) Bromic acid. B) Bromous acid. C) Hydrobromic acid. D) Hydrobromous acid. Show Answer Correct Answer: C) Hydrobromic acid. 24. Which is a natural indicator A) Phenoptyalin. B) Sulpher. C) Litmus. D) Naoh. Show Answer Correct Answer: C) Litmus. 25. What is an Arrhenius acid? A) A substance that produces H+ in water. B) A substance that produces OH-in water. C) All the above. D) None of the above. Show Answer Correct Answer: A) A substance that produces H+ in water. ← 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