This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Acids – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Acids Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What substance would do the best job of cleaning pots and pans? A) A substance with a pH of 7. B) A substance with a pH of 4. C) A substance with a pH of 2. D) A substance with a pH of 8. Show Answer Correct Answer: D) A substance with a pH of 8. 2. An acid can react with A) AgCl. B) We can. C) PbSO4. D) Na2so4. Show Answer Correct Answer: B) We can. 3. Which of the acids are called king of chemicals A) Hydrochloric Acid. B) Sulphuric Acid. C) Nitric Acid. D) Vinegar(acetic acid). Show Answer Correct Answer: B) Sulphuric Acid. 4. Can sodium hydroxide is used to manufacture paper and textiles A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. Which type of reaction is this? Base + Acid $\rightarrow$ Salt + Water A) Addition reaction. B) Substitution reaction. C) Displacement reaction. D) Neutralization reaction. Show Answer Correct Answer: D) Neutralization reaction. 6. The metal used in galvanisation A) Copper. B) Bronge. C) Zinc. D) Chromium. Show Answer Correct Answer: C) Zinc. 7. Indicator that turns red in the presence of an acid and blue in the presence of a base A) Solvent. B) Solute. C) Litmus. D) Temperature. Show Answer Correct Answer: C) Litmus. 8. Non-meat examples of protein include A) Broccoli, kale, carrots. B) Beans, legumes, eggs. C) Tofu, apples, spinach. D) None of the above. Show Answer Correct Answer: B) Beans, legumes, eggs. 9. Where does translation take place? A) Nucleus. B) Ribosome. C) Golgi Body. D) Cytoplasm. Show Answer Correct Answer: B) Ribosome. 10. Steps or rungs of ladder, are made up of: A) Nitrogen containing bases that connect in center by weak hydrogen bonds. B) Nitrogen containing bases that connect in the center by carbohydrate bonds. C) Nitrogen containing bases that connect in the center by weak phosphate bonds. D) Nitrogen containing bases that connect in the center by strong phosphate bonds. Show Answer Correct Answer: A) Nitrogen containing bases that connect in center by weak hydrogen bonds. 11. How do acidic solutions taste? A) Delicious. B) Sweet. C) Bitter. D) Sour. Show Answer Correct Answer: D) Sour. 12. Zn(OH)$_{2}$ is an example of a ..... A) Acid. B) Base. C) Salt. D) Water. Show Answer Correct Answer: B) Base. 13. Soluble base in water is, A) Metallic oxide. B) Alkali. C) Metallic hydroxide. D) None of the above. Show Answer Correct Answer: B) Alkali. 14. Which has a pH below 7? A) Acid. B) Base. C) All the above. D) None of the above. Show Answer Correct Answer: A) Acid. 15. Which of the following particles is NOT present in a dilute aqueous solution of ammonia? A) NH$_{4}$$^{+}$. B) NH$_{3}$. C) OH$^{-}$. D) NH$_{4}$OH. Show Answer Correct Answer: D) NH$_{4}$OH. 16. Any substance that produces hydroxide ions in water is known as ..... A) An acid. B) A hydrogen ion. C) A base. D) A neutral. Show Answer Correct Answer: C) A base. 17. Litmus paper can tell you if a solution is acidic, neutral or basic by changing color when placed in a solution. If you test a base with litmus paper, it will turn ..... A) Purple. B) Red. C) Blue. D) Pink. Show Answer Correct Answer: C) Blue. 18. How do we test for hydrogen? A) Squeaky pop test. B) Bubbling through lime water. C) Hydrogen extinguishes a lit splint. D) Hydrogen makes a glowing splint relight. Show Answer Correct Answer: A) Squeaky pop test. 19. Select the name for the following acid:H$_{2}$S A) Hydrosulfuric acid. B) Sulfuric acid. C) Sulfurous. D) None of the above. Show Answer Correct Answer: A) Hydrosulfuric acid. 20. Hydroiodic acid A) Real. B) H1I1. C) HI. D) None of the above. Show Answer Correct Answer: C) HI. 21. What is the pH of an extremely strong acid? A) PH 0. B) PH 7. C) PH 13. D) PH 2. Show Answer Correct Answer: D) PH 2. 22. According to the pH scale, indicator will turn red if a solution is A) Acidic. B) Alkali. C) Neutral. D) Bored. Show Answer Correct Answer: A) Acidic. 23. What are properties of acids? A) Bitter, slippery, ph above 7. B) Sour, reacts with metals, ph below 7. C) Sour, reacts with metals, ph above 7. D) Bitter, ph of 7, does not react with metals. Show Answer Correct Answer: B) Sour, reacts with metals, ph below 7. 24. What do acids and bases have in common? A) They both eat away at metal. B) They can both conduct electricity. C) They both have a sour taste. D) They both form positively charged ions when dissolved in water. Show Answer Correct Answer: B) They can both conduct electricity. 25. True or False.A hydrogen ion H$^{+}$ is also known as a proton. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← 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