This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. HCl + NaOH = ..... + ..... A) NaCl + H02. B) Cut + this 0. C) NaCl + H20. D) C12H22O11 + H20. Show Answer Correct Answer: C) NaCl + H20. 2. Sodium carbonate is also know as A) Washing soda. B) Epsom Salt. C) Table salt. D) None of the above. Show Answer Correct Answer: A) Washing soda. 3. Most microorganisms cannot live in A) Acidic environment. B) Basic Environment. C) All the above. D) None of the above. Show Answer Correct Answer: A) Acidic environment. 4. Any 1 example of tartaric acid. A) Mango. B) Milk. C) Spinach. D) Grapes. Show Answer Correct Answer: D) Grapes. 5. Potassium Hydroxide is present in? A) Banana. B) Rust. C) Window cleaner. D) Soap. Show Answer Correct Answer: D) Soap. 6. Which of the following substances can be used to prepare copper (II) chloride by reaction with hydrochloric acid?I Copper (II) oxideII Copper (II) nitrateIII Copper (II) carbonateIV Copper (II) hydroxide A) I, II and III. B) I, II and IV. C) I, III and IV. D) II, III and IV and IV. Show Answer Correct Answer: C) I, III and IV. 7. Another name of Magnesium Hydroxide? A) Slaked lime. B) Caustic soda. C) Milk of Magnesia. D) Indicator. Show Answer Correct Answer: C) Milk of Magnesia. 8. Salt is ..... A) Ionic compound. B) Covalent compound. C) All the above. D) None of the above. Show Answer Correct Answer: A) Ionic compound. 9. What is the symbol for carbonate? A) CO. B) CO2. C) Elbow. D) None of the above. Show Answer Correct Answer: C) Elbow. 10. A solution Y is colourless when phenolphthalein was added to it. It didn't change its colour even on turmeric paper. It didnot change the colour of blue litmus paper too. What is the nature of the substance Y? A) Acid. B) Neutral. C) Base. D) Can't find with this data. Show Answer Correct Answer: B) Neutral. 11. What are the products of the equation when you combine Platinum and Water? A) Platinum. B) Platinum + Water. C) No Reaction. D) None of the above. Show Answer Correct Answer: C) No Reaction. 12. Which of the following options best defines an acid? A) Acids are bitter in taste. B) Acids are sour in taste. C) Acids are soapy to touch. D) Bases are soapy to touch. Show Answer Correct Answer: B) Acids are sour in taste. 13. Soap contains ..... A) Potassium Hydroxide. B) Calcium Hydroxide. C) Ammonium Hydroxide. D) Magnesium Hydroxide. Show Answer Correct Answer: A) Potassium Hydroxide. 14. Tannic Acid is present in A) Tea. B) Coffee. C) Tomato. D) Vinegar. Show Answer Correct Answer: A) Tea. 15. An unknown salt, M$_{2}$Z, has a K$_{sp}$ of 3.3 x 10$^{-9}$. Calculate the solubility in mol/L of M$_{2}$Z. A) 2.9 x 10$^{-5}$ M. B) 5.7 x 10$^{-5}$ M. C) 9.4 x 10$^{-5}$ M. D) 3.7 x 10$^{-5}$ M. Show Answer Correct Answer: C) 9.4 x 10$^{-5}$ M. 16. Can salt be reversed back to form acid and base. A) YES. B) NO. C) All the above. D) None of the above. Show Answer Correct Answer: B) NO. 17. Hcl+ ..... $\rightarrow$Nacl+H20 A) Mg0. B) NaOH. C) Fe. D) C02. Show Answer Correct Answer: B) NaOH. 18. What is the symbol for Copper? A) C. B) Co. C) Cu. D) CU. Show Answer Correct Answer: C) Cu. 19. What colour does UI turn in a solution of pH 6? A) Red. B) Yellow. C) Dark green. D) Turquoise. Show Answer Correct Answer: B) Yellow. 20. Silver is more reactive than Copper. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. How can you convert zinc oxide to zinc carbonate? A) Add zinc oxide in dilute hydrochloric acid. Then add excess sodium carbonate to the resulting solution. B) Pass carbon dioxide gas over zinc oxide powder. C) Heat a mixture of carbon and zinc oxide powder. D) Add zinc oxide powder to sodium carbonate solution. Show Answer Correct Answer: A) Add zinc oxide in dilute hydrochloric acid. Then add excess sodium carbonate to the resulting solution. 22. Which of the following mixture will react to produce an aqueous zinc nitrate solution?I Zinc carbonate and dilute nitric acid.II Zinc oxide and dilute nitric acid.III Zinc oxide and potassium nitrate solution.IV Zinc and aqueous sodium nitrate solution. A) I and II. B) II and III. C) III and IV. D) I and IV. Show Answer Correct Answer: A) I and II. 23. Tamarind, curd and lemon taste sour because A) They contain acids. B) They do not contain acids. C) All the above. D) None of the above. Show Answer Correct Answer: A) They contain acids. 24. Materials used in the manufacture of bleaching powder are- A) Lime stone and chlorine. B) Quick lime and chlorine. C) Slaked lime and HCI. D) Slaked lime and chlorine. Show Answer Correct Answer: D) Slaked lime and chlorine. 25. General property of acid A) Taste sour. B) Bitter button. C) Not soluble in water. D) None of the above. Show Answer Correct Answer: A) Taste sour. ← 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 10Class 7 Science Chapter 4 Salts Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books