This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Phenolphthalein turns ..... in Acid. A) Colouless. B) Pink. C) Yellow. D) Red. Show Answer Correct Answer: A) Colouless. 2. Generally, Litmus Paper is available as ..... and ..... colour. A) Yellow and Orange. B) Red and Blue. C) Black And White. D) Pink and Purple. Show Answer Correct Answer: B) Red and Blue. 3. Complete the following word equation:Metal + Acid $\rightarrow$ A) Salt + water. B) Salt + hydrogen. C) Salt + Water + Carbon dioxide. D) None of the above. Show Answer Correct Answer: B) Salt + hydrogen. 4. When metals react with acids they form- A) Salt. B) Neutralization reaction occurrs. C) Salt + Hydrogen gas. D) Salt + Water. Show Answer Correct Answer: C) Salt + Hydrogen gas. 5. Ionic equation of Pb(NO$_{3}$)$_{2}$ + Na$_{2}$CO$_{3}$ $\rightarrow$ PbCO$_{3}$ + 2NaNO$_{3}$Persamaan ion bagi PbSO$_{4}$ + Na$_{2}$CO$_{3}$ $\rightarrow$ PbCO$_{3}$ + Na$_{2}$SO$_{4}$ A) $ 2NA^{ +} $ + 2no $ _ {3} $$^{-} $ $\rightarrow$ 2nano $ _ {3} $. B) Pb $^{2 +} $ + co $ _ {3} $ $^{2-} $ $\rightarrow$ pbco $ _ {3} $. C) 2pb $^{ +} $ + co $ _ {3} $ $^{2-} $ $\rightarrow$ Pbco $ _ {3} $. D) Na$^{2+}$ + NO$_{3}$$^{2-}$$\rightarrow$ 2NaNO$_{3}$. Show Answer Correct Answer: B) Pb $^{2 +} $ + co $ _ {3} $ $^{2-} $ $\rightarrow$ pbco $ _ {3} $. 6. Malic Acid A) Apples. B) Oranges. C) Pineapple. D) Tomato. Show Answer Correct Answer: A) Apples. 7. ..... can be corrosive. A) Acids. B) Bases. C) Acids and bases. D) Neutral substances. Show Answer Correct Answer: C) Acids and bases. 8. Compound potassium sulfide is classified as: A) Basic salt. B) Neutral salt. C) Acidic salt. D) None of the above. Show Answer Correct Answer: B) Neutral salt. 9. Select od one out A) Phenolphthalein. B) Hibiscus. C) Litmus. D) Turmeric. Show Answer Correct Answer: A) Phenolphthalein. 10. Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Sodium hydroxide ph is? A) 7. B) 5.5. C) 13. D) 14. Show Answer Correct Answer: D) 14. 12. State whether the following compound is soluble or insoluble. Barium sulfate BaSO$_{4 }$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insoluble. 13. When Siya dips blue litmus to a solution which turns it to red, what is the most logical conclusion you can draw from that? A) PH of the solution is 7. B) PH of the solution is 2. C) Solution is acidic. D) Solution is basic. Show Answer Correct Answer: C) Solution is acidic. 14. Which of the following does solubility depend on pH? A) Lead chloride. B) Lead hydroxide. C) Lead nitrate. D) Lead perchlorate. Show Answer Correct Answer: B) Lead hydroxide. 15. Which of the following methods can be used to dry the solid?I) using a filter paperII) put it in a desiccatorIII) Put it in an oven A) I & II only. B) I & III only. C) II & III only. D) I, III. Show Answer Correct Answer: D) I, III. 16. Salt and water is formed when there is a chemically reaction between which two? A) Acids and pH. B) Bases and acids. C) PH and bases. D) Charges and pH. Show Answer Correct Answer: B) Bases and acids. 17. LITMUS PAPER IS AVAILABLE IN THESE TWO COLOURS? A) BLUE ONLY. B) RED ONLY. C) BOTH BLUE AND RED. D) ONY WHITE. Show Answer Correct Answer: C) BOTH BLUE AND RED. 18. Window cleaners generally contains ..... A) Magnesium Hydroxide. B) Potassium Hydroxide. C) Ammonium Hydroxide. D) Sodium Hydroxide. Show Answer Correct Answer: C) Ammonium Hydroxide. 19. The pH of a solution of Ammonium chloride is A) >7. B) <7. C) =7. D) Can't say. Show Answer Correct Answer: B) <7. 20. The solutions which do not change colour of either red or blue litmus are known as ..... solutions. A) Neutral. B) Acidic. C) Basic. D) Salty. Show Answer Correct Answer: A) Neutral. 21. Which of the following statements best define the term 'salt'? A) Salt is formed when metal reacts with an alkali. B) Salt contains sodium ions and chloride ions. C) Salt is formed from a weak Van der Waals' forces of attraction. D) Salt is formed when the hydrogen ions in an acid is replaced by metal or ammonium ions. Show Answer Correct Answer: D) Salt is formed when the hydrogen ions in an acid is replaced by metal or ammonium ions. 22. Compound sodium hydrogencarbonate is classified as: A) Acidic salt. B) Basic salt. C) Amphotheric hydroxide. D) None of the above. Show Answer Correct Answer: A) Acidic salt. 23. Litmus is extracted from which natural thing? A) Fungi. B) Lichen. C) Moss. D) Plant. Show Answer Correct Answer: B) Lichen. 24. Compound beryllium hydroxide is classified as: A) Basic salt. B) Amphotheric hydroxide. C) Hydroxide. D) None of the above. Show Answer Correct Answer: B) Amphotheric hydroxide. 25. Sodium Chloride, NaCl A) Soluble salt. B) Insoluble salt. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble salt. ← 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 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