1. Salts are ionic compounds formed due to the electrostatic attraction between
Answer: B. oppositely charged ions
Chemistry Class 10 Unit 6: Salts MCQs
24 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers".
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2. In the formation of a salt, the positive ions come from the
Answer: D. base
3. The primary reason salts have high melting points is
Answer: A. strong electrostatic forces between ions
4. Solid salts do not conduct electricity because their ions are
Answer: C. held in fixed positions in the lattice
5. Molten salts conduct electricity because they have
Answer: B. free-moving ions
6. When a salt dissolves in water, its ions
Answer: C. become mobile
7. All sodium, potassium and ammonium salts are
Answer: A. soluble in water
8. All nitrate salts are
Answer: D. soluble in water
9. Most chlorides are soluble except
Answer: B. lead(II) chloride and silver chloride
10. Most carbonates are insoluble except those of
Answer: A. sodium, potassium and ammonium
11. Which carbonate is insoluble in water?
Answer: D. Calcium carbonate
12. Most common sulphates are soluble except those of
Answer: C. lead, barium and calcium
13. Which of the following salts is soluble in water?
Answer: A. Sodium nitrate
14. Which of the following salts is insoluble in water?
Answer: D. Lead chloride
15. A soluble salt can be prepared from an acid and an alkali by
Answer: C. titration
16. In titration of HCl with NaOH using phenolphthalein, the end point is when the colour changes from colourless to
Answer: B. light pink
17. Which method is the most suitable to prepare a soluble salt from an acid and an alkali?
Answer: D. Titration
18. To prepare zinc sulphate from zinc and dilute sulphuric acid, zinc is added in
Answer: A. excess
19. When preparing a salt using an excess metal, the excess metal is removed by
Answer: C. filtration
20. When preparing copper(II) sulphate from sulphuric acid, an excess of ______ is added.
Answer: B. copper(II) oxide
21. An acid reacting with an excess of an insoluble base gives
Answer: C. a salt and water
22. When preparing calcium chloride from HCl and excess CaCO₃, the gas evolved is
Answer: B. carbon dioxide
23. When an insoluble carbonate reacts with an acid, the gas produced is
Answer: A. carbon dioxide
24. The steps in preparing a soluble salt using an excess insoluble solid are reaction, filtration and
Answer: D. crystallisation
About Chemistry Class 10 Unit 6 MCQs (Federal Board)
These 24 Chemistry MCQs cover Class 10 Unit 6: Salts of the Federal Board (FBISE) SSC-II (Class 10) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. You can also read the Salts notes for this chapter. Download the Salts MCQs as a PDF using the button at the top of this page.