This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Tumeric is a A) Acid. B) Base. C) Natural indicator. D) Artificial indicator. Show Answer Correct Answer: C) Natural indicator. 2. Which of the following can be used as an antacid? A) On $ _ {2} $ co $ _ {3} $. B) NaHCO $ _ {3} $. C) NaCl. D) NaOH. Show Answer Correct Answer: B) NaHCO $ _ {3} $. 3. When an acid reacts with a base, what are the products? A) Salt and water. B) Acid and base. C) Salt and acid. D) Base and water. Show Answer Correct Answer: A) Salt and water. 4. Acids are ..... in taste while bases are ..... A) Sour, bitter. B) Bitter, sour. C) Sour, sweet. D) Bitter, sweet. Show Answer Correct Answer: A) Sour, bitter. 5. Acid present in fizzy drinks and soda drinks A) Formic acid. B) Acetic acid. C) Carbonic acid. D) Malic acid. Show Answer Correct Answer: C) Carbonic acid. 6. Which of the following method is suitable to prepare iron(II) sulphate? A) FeCl$_{2}$ + H$_{2}$SO$_{4}$ $\rightarrow$. B) Fe(NO$_{3}$)$_{2}$ + H$_{2}$SO$_{4}$ $\rightarrow$. C) Fe + H$_{2}$SO$_{4}$ $\rightarrow$. D) Fe(OH)$_{2}$ + H$_{2}$SO$_{4}$ $\rightarrow$. Show Answer Correct Answer: C) Fe + H$_{2}$SO$_{4}$ $\rightarrow$. 7. All of the following compounds are soluble except; A) Silver nitrate. B) Sodium chloride. C) Barium sulfate. D) Potassium carbonate. Show Answer Correct Answer: C) Barium sulfate. 8. ..... give relief from WASP STING A) Lemon. B) Baking Soda. C) Vinegar. D) Milk. Show Answer Correct Answer: C) Vinegar. 9. Is LiCl A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble. 10. An indicator will ..... when it is in contact with an acid or base A) Bubble. B) Form a new substance. C) Change color. D) Stay the same color. Show Answer Correct Answer: C) Change color. 11. What happens when soap is rubbed on a turmeric stain on a shirt? A) It turns RED. B) It remains YELLOW. C) It turns MAGENTA. D) It turns PINK. Show Answer Correct Answer: A) It turns RED. 12. Inorganic salt, white powdery compound used as a preservative A) Sodium carbonate. B) Ammonium chloride. C) Barium sulphate. D) Potassium chloride. Show Answer Correct Answer: A) Sodium carbonate. 13. Turmeric, litmus, china rose petals are A) Indicator. B) Conductor. C) Insulator. D) None of these. Show Answer Correct Answer: A) Indicator. 14. Sodium hydroxide + sulfuric acid $\rightarrow$ ..... ? A) Sodium carbonate. B) Sodium sulfate. C) All the above. D) None of the above. Show Answer Correct Answer: B) Sodium sulfate. 15. Which of the following insoluble salt? Antara next, which salt is not dissolved salt? A) Lead (I) Sultaplumbum (II) Sulfat. B) Sodium chlorideNatrium klorida. C) Magnesium nitrate Magnesium nitrat. D) Lead (II) nitaratePlumbum (II) nitrat. Show Answer Correct Answer: A) Lead (I) Sultaplumbum (II) Sulfat. 16. Solution P forms white precipitate with lead(II) nitate. Which of the following ions could be present in solution P?I ChlorideII SulphateIII CarbonateIV Iodide A) I and II. B) I and IV. C) I, II and III. D) I, II, III and IV. Show Answer Correct Answer: D) I, II, III and IV. 17. What happens during a neutralization reaction? A) Carbon dioxide and water are formed. B) Water and a salt are formed. C) Hydrogen and a base are formed. D) Oxygen and a metal are formed. Show Answer Correct Answer: B) Water and a salt are formed. 18. Which substances taste us sour? A) Bases. B) Neutralizers. C) Salts. D) Acids. Show Answer Correct Answer: D) Acids. 19. Coffee is brown and bitter in taste. Is it an acid or a base? A) Acid. B) Base. C) All the above. D) None of the above. Show Answer Correct Answer: B) Base. 20. ..... litmus paper turns ..... in acidic conditions. A) Blue, red. B) Red, blue. C) Red, colourless. D) Pink to colourless. Show Answer Correct Answer: A) Blue, red. 21. Lead(II) nitrate, Pb(NO$_{3}$)$_{2}$ A) Soluble Salt. B) Insoluble Salt. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble Salt. 22. What is meant by p and H in pH? A) Potency and hydrogen. B) Potassium and Helium. C) Phosphorous and Hydrogen. D) Potency and helium. Show Answer Correct Answer: A) Potency and hydrogen. 23. When an acid reacts with a metal carbonate and metal hydrogen carbonate, it gives the corresponding salt, water and releases which gas? A) O$_{2}$. B) CO$_{2}$. C) H$_{2}$. D) N$_{2}$. Show Answer Correct Answer: B) CO$_{2}$. 24. What is the oxidation number of a Sulfur in the compound Na2SO4? A) -2. B) +6. C) +2. D) None of the above. Show Answer Correct Answer: B) +6. 25. When litmus is added to a basic solution it turns into A) Red. B) Blue. C) Pink. D) White. Show Answer Correct Answer: B) Blue. ← PreviousNext →Related QuizzesClass 7 Science Chapter 4 Salts Quiz 1Class 7 Science Chapter 4 Salts Quiz 2Class 7 Science Chapter 4 Salts Quiz 3Class 7 Science Chapter 4 Salts Quiz 4Class 7 Science Chapter 4 Salts Quiz 5Class 7 Science Chapter 4 Salts Quiz 6Class 7 Science Chapter 4 Salts Quiz 7Class 7 Science Chapter 4 Salts Quiz 8Class 7 Science Chapter 4 Salts Quiz 9Class 7 Science Chapter 4 Salts Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books