This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 26 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What do we do when an ant bites us? A) Apply citric acid. B) Apply moist baking soda. C) Apply neutral solution. D) Apply formic acid. Show Answer Correct Answer: B) Apply moist baking soda. 2. Caustic Potash:Potassium Hydroxide::Caustic Soda: ..... A) Sodium Chloride. B) Sodium Hydroxide. C) Sodium. D) None. Show Answer Correct Answer: B) Sodium Hydroxide. 3. CH3COO-+ H2O ==> CH3COOH + OH-2. PO43-+ 3H2O ==> H3PO4 + 3OH-3. NH4+ + H2O ==> NH4OH + H+ 4. CN-+ H2O ==>HCN + OH-5. Al3+ + 3H2O ==> Al(OH)3 + 3H+ Pasangan persamaan reaksi hidrolisis yang bersifat basa adalah ..... A) 1 and 2. B) 2 and 3. C) 2 and 5. D) 3 and 5. E) 4 and 5. Show Answer Correct Answer: A) 1 and 2. 4. Zinc nitrate can be prepared by reacting nitric acid with excess solid. Which of the following solids cannot be used in the preparation of calcium nitrate? A) Zinc. B) Zinc sulphate. C) Zinc oxide. D) Zinc carbonate. Show Answer Correct Answer: B) Zinc sulphate. 5. Which of the following salts is generally considered insoluble in water? A) Sodium chloride (NaCl). B) Potassium nitrate (KNO3). C) Calcium sulfate (CaSO4). D) Ammonium acetate (CH3COONH4). Show Answer Correct Answer: C) Calcium sulfate (CaSO4). 6. Electrolyte A) Acids. B) Bases. C) Salts. D) All. Show Answer Correct Answer: D) All. 7. COMMON INDICATOR USED IN LABORATORY IS A) TURMERIC. B) PHENOPHTHALIN. C) METHYL ORANGE. D) LITMUS. Show Answer Correct Answer: D) LITMUS. 8. NaOH is obtained by electrolysis of A) Aq. solution of NaCl. B) AqOn $ _ {2} $ co $ _ {3} $. C) Tongue.NHO$_{3}$. D) Paint nacl. Show Answer Correct Answer: A) Aq. solution of NaCl. 9. From the following compounds that can experience partial hydrolysis is ..... A) NaCl. B) K$_{2}$SO$_{4}$. C) CaF$_{2}$. D) CH $ _ {3} $ cook $ _ {4} $. E) AlF$_{3}$. Show Answer Correct Answer: C) CaF$_{2}$. 10. Tooth decay is cause by the presence of a base. (True or False) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. ..... turns red when alkali is added to it. A) Phenolphthalein. B) Methyl orange. C) Litmus. D) China rose. Show Answer Correct Answer: B) Methyl orange. 12. Salts have metallic and nonmetallic elements. Which of these elements has positive charges? A) Metallic. B) Nonmetallic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Metallic. 13. Identify the acid present in a popular Indian dish, tamarind rice. A) Tannic acid. B) Lactic acid. C) Tartaric acid. D) Citric acid. Show Answer Correct Answer: C) Tartaric acid. 14. Why is burning a salt one way to determine the metal used in preparing it? A) Each metal burns a different color. B) Some metals burn and some don't. C) Each metal has a different colored smoke. D) Burning salts is not will not help determine the metal. Show Answer Correct Answer: A) Each metal burns a different color. 15. Ouick lime is added to ..... soil while, organic matter is added to ..... soil. A) Acidic, basic. B) Basic, acidic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Acidic, basic. 16. The medicines used to reduce acidity are known as ..... ? A) Acids. B) Antacids. C) Alkalies. D) Salts. Show Answer Correct Answer: B) Antacids. 17. The following equation represents a reaction between a metal and an acid.Zn+HCl $\rightarrow$ salt + H$_{2}$Which of the following options shows the name of the salt and its solubility? A) Zinc, insoluble. B) Zinc oxide, insoluble. C) Zinc chloride, soluble. D) Hydrochloric acid, soluble. Show Answer Correct Answer: C) Zinc chloride, soluble. 18. Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? A) Acidic. B) Either basic or neutral in nature. C) Basic. D) None of the above. Show Answer Correct Answer: B) Either basic or neutral in nature. 19. Potassium chromate solution reacts with solution L to form a yellow precipitate. What could be L contains? A) Zn$^{2+}$. B) Ca$^{2+}$. C) Mg$^{2+}$. D) Pb$^{2+}$. Show Answer Correct Answer: D) Pb$^{2+}$. 20. If upto (a) of salt is soluble in 100 ml of salt, it is referred as a soluble salt A) A. 1g. B) 199g. C) 19 g. D) None of the above. Show Answer Correct Answer: A) A. 1g. 21. Lime water reacts with chlorine to form A) Cacl $ _ {2} $. B) Caocl $ _ {2} $. C) Ca(ClO$_{3}$)$_{2}$. D) CaO$_{2}$Cl$_{2}$. Show Answer Correct Answer: B) Caocl $ _ {2} $. 22. Ant stings contains: A) Zinc carbonate. B) Sodium Hydrogen Carbonate. C) Formic Acid. D) Acetic Acid. Show Answer Correct Answer: C) Formic Acid. 23. Neutralisation reaction occurs between? A) Acids and acids. B) Acids and bases. C) Bases and bases. D) None of the above. Show Answer Correct Answer: B) Acids and bases. 24. Give the name of an ion SO4 $^{2-}$: A) Sulfite. B) Sulfate. C) Thiosulphate. D) None of the above. Show Answer Correct Answer: B) Sulfate. 25. One drawback of pH paper is that it A) Only tells you if a substance is an acid or a base. B) Is very expensive. C) Has to be connected to a computer. D) Is not very accurate. Show Answer Correct Answer: D) Is not very accurate. ← 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