This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is salt A) A liquid compound. B) A chemical compound. C) A Soluble compound. D) None of the above. Show Answer Correct Answer: B) A chemical compound. 2. Sodium bromide / natrium bromida A) Sodium hydroxide + hydrobromic acid sodium hydroxide + acid hydrobromic. B) Sodium sulphate + potassium bromideNatrium sulfat + kalium bromida. C) Sodium + hydrobromic acid Natrium + asid hidrobromik. D) None of the above. Show Answer Correct Answer: A) Sodium hydroxide + hydrobromic acid sodium hydroxide + acid hydrobromic. 3. Find the Ksp for Ce(IO$_{3}$)$_{3}$ if the solubility of Ce(IO$_{3}$)$_{3}$ in a 0.2 M NaIO$_{3}$ solution is 4.4 x 10$^{-8}$ M A) 3.5 x 10$^{-10}$ M. B) 4.4 x 10$^{-8}$ M. C) 0.2 M. D) 1.3 x 10$^{-7}$ M. Show Answer Correct Answer: A) 3.5 x 10$^{-10}$ M. 4. If two solutions each contain 25 ml of 0.2 m NaOH and 25 ml CH $ _ {3} $ COOH 0.2 M with k $ _ {a} $ ch $ _ {3} $ coh = 10 $^{-5} $ mixed, then the pH is ..... A) 3. B) 4. C) 5. D) 9. E) 10. Show Answer Correct Answer: D) 9. 5. What products when we react an acid with an base? A) Salt. B) Salt + hydrogen. C) Salt + water. D) Salt + water + hydrogen. Show Answer Correct Answer: C) Salt + water. 6. Which method is used to separate the solids produced from the reaction below:NaCl (aq) + AgNO$_{3}$ (aq) $\rightarrow$ AgCl (s) + NaNO$_{3}$ (aq) A) Chromatography. B) Crystallisation. C) Distillation. D) Filtration. Show Answer Correct Answer: D) Filtration. 7. Which of these is used in the glass industry? A) Sodium Chloride. B) Sodium Hydroxide. C) Sodium Carbonate. D) Sodium bicarbonate. Show Answer Correct Answer: C) Sodium Carbonate. 8. How does acids taste? A) Bitter. B) Sour. C) Sweet. D) Spice. Show Answer Correct Answer: B) Sour. 9. Pure rain is slightly acidic due to presence of which acid A) Acetic acid. B) Carbonic acid. C) Formic acid. D) Amino acid. Show Answer Correct Answer: B) Carbonic acid. 10. How do you remove the water to leave solid copper sulfate crystals? A) Filtration. B) Evaporation. C) Distillation. D) Dissolving. Show Answer Correct Answer: B) Evaporation. 11. Neutral salts are formed by the reaction of weak acid and strong base. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. Acid can prevent bacteria from growing A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. Calcium hydroxide is the scientific name of A) Lime. B) Soap. C) Lime Water. D) None of the above. Show Answer Correct Answer: C) Lime Water. 14. Which of the following is soluble salt? Which salt is the illegal salt? A) Lead (ii) sulphate / plumbum (ii) sulfate. B) Calcium sulfate / Kalsium sulfat. C) Silver Chloride / Argentum Chloride. D) Barium nitrate / Barium nitrat. Show Answer Correct Answer: D) Barium nitrate / Barium nitrat. 15. Name the acid that is present fire extinguishers. A) Hydrochloric acid. B) Nitric acids. C) Sulphuric acid. D) None of the above. Show Answer Correct Answer: C) Sulphuric acid. 16. Silver chromate, Ag$_{2}$CrO$_{4}$, has a K$_{sp}$ of 8.96 x 10$^{-12}$. Calculate the solubility in mol/L of silver chromate. A) 1.31 x 10$^{-4}$M. B) 1.65 x 10$^{-4}$M. C) 2.25 x 10$^{-12}$M. D) 2.08 x 10$^{-4}$M. Show Answer Correct Answer: A) 1.31 x 10$^{-4}$M. 17. Human body works under a Ph of? A) 7.0-10.5. B) 7.0-8.7. C) 7.0-7.7. D) 7.0-7.8. Show Answer Correct Answer: C) 7.0-7.7. 18. Which one of the following salts does not contain water of crystallisation? A) Blue vitriol. B) Baking soda. C) Washing soda. D) Gypsum. Show Answer Correct Answer: B) Baking soda. 19. Which of the following is NOT part of the definition of salt? A) Ionic compound. B) When hydrogen ion of an acid. C) Is replaced by a metal or ammonium ion. D) Contains hydrogen ions. Show Answer Correct Answer: D) Contains hydrogen ions. 20. Metal + Water yields ..... A) Metal Oxide + Hydrogen. B) Metal Hydroxide + Hydrogen. C) A + B. D) Metal Oxide. Show Answer Correct Answer: B) Metal Hydroxide + Hydrogen. 21. Bleaching powder acts as A) Oxidizing agent. B) Reducing agent. C) Decolourising agent. D) 1&3. Show Answer Correct Answer: D) 1&3. 22. Acidity is when you measure how strong a(n) ..... solution is. A) Base. B) Acid. C) All the above. D) None of the above. Show Answer Correct Answer: B) Acid. 23. Wasp stings are ..... in nature. It can be neutralized by soaking the infected area in ..... A) ALKALINE, ACID. B) ACIDIC, BASE. C) BASIC, BASE. D) ACIDIC, ACID. Show Answer Correct Answer: A) ALKALINE, ACID. 24. What is injected into the skin when an ant bites? A) Citric acid. B) Tamarind. C) Formic acid. D) Salt. Show Answer Correct Answer: C) Formic acid. 25. The reaction of an acid with a base to form salt and water is called A) Condensation. B) Neutralization. C) Chemical reaction. D) Weathering. Show Answer Correct Answer: B) Neutralization. ← 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 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 10Class 7 Science Chapter 4 Salts Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books