This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Salts have a pH level between what range? A) 7 and 14. B) 0 and 7. C) 3 and 8. D) 0 and 14. Show Answer Correct Answer: B) 0 and 7. 2. Phenolphthalein remains ..... when added to dilute hydrochloric acid but turns ..... when added to sodium hydroxide solution. A) Red, blue. B) Green, magenta. C) Colourless, pink. D) Colourless, red. Show Answer Correct Answer: C) Colourless, pink. 3. What is the Colored Gas Produce During Thermal Decomposition of Zinc Nitrate? Are the colored gas that is produced during the thermal decomposition for zinc nitrate? A) Bromine Gas / Gas Bromine. B) Nitrogen Dioxide / Nitrogen Diocsida. C) Nitrogen Oxide / Nitrogen Oksida. D) Chlorine Gas / Gas Klorin. Show Answer Correct Answer: B) Nitrogen Dioxide / Nitrogen Diocsida. 4. In neutralisation reaction a new substance is formed. This is called ..... A) Acid. B) Base. C) Salt. D) Sugar. Show Answer Correct Answer: C) Salt. 5. The term acid has been derived from the Latin word ..... which means sour. A) Base. B) Salt. C) Acidus. D) Acetate. Show Answer Correct Answer: C) Acidus. 6. One benefit of pH paper is that it ..... A) Tells you the pH of a substance. B) Only tells you if a substance is an acid or a base. C) It is very accurate. D) It is expensive. Show Answer Correct Answer: A) Tells you the pH of a substance. 7. What are the two products of Neutralization? A) Salt + Water. B) Salt + Water + Carbon Dioxide. C) Salt + Water + Hydrogen. D) None of the above. Show Answer Correct Answer: A) Salt + Water. 8. Salts produced by the reactions of hydrochloric acid are known as ..... A) Chlorines. B) Nitrates. C) Chlorides. D) Bromides. Show Answer Correct Answer: C) Chlorides. 9. State whether the following compound is soluble or insoluble. Barium chloride BaCl$_{2}$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble. 10. The word acid comes from the latin word A) Basic. B) Acre. C) Bitter. D) Sour. Show Answer Correct Answer: B) Acre. 11. The ..... is the thing being dissolved. A) Solute. B) Solvent. C) Mixture. D) Solution. Show Answer Correct Answer: A) Solute. 12. Tamarind, Grapes, Unripe Mangoes, Cherries, Peach etc ..... contains A) Lactic Acid. B) Citric Acid. C) Tartaric Acid. D) Ascorbic Acid. Show Answer Correct Answer: C) Tartaric Acid. 13. Complete this equation:sulfuric acid + potassium hydroxide $\rightarrow$ A) Potassium oxide + hydrogen. B) Potassium chloride + water. C) Potassium sulfate + hydrogen. D) Potassium sulfate + water. Show Answer Correct Answer: D) Potassium sulfate + water. 14. How do you separate an excess insoluble reactant from a solution? A) Filtration. B) Precipitation. C) Crystalisation. D) Evaporation. Show Answer Correct Answer: A) Filtration. 15. NAOH + HCL gives ..... and ..... A) NACL, H20. B) NACL, CO2. C) All the above. D) None of the above. Show Answer Correct Answer: A) NACL, H20. 16. When acid reacts to base it forms A) Salt+Water. B) Salt+CO2. C) Only water and Co2. D) Only salt. Show Answer Correct Answer: A) Salt+Water. 17. When compound M is heated, a brown gas is evolved and black residue is left behind. M could be A) Zinc carbonate. B) Copper(II) nitrate. C) Lead(II) nitrate. D) Magnesium nitrate. Show Answer Correct Answer: B) Copper(II) nitrate. 18. Which element reacts with dilute sulfuric acid to produce hydrogen? A) Carbon. B) Copper. C) Zinc. D) Chlorine. Show Answer Correct Answer: C) Zinc. 19. Which of the following is not a natural indicator? A) Litmus. B) Turmeric. C) Red Cabbage. D) Phenolphthalein. Show Answer Correct Answer: D) Phenolphthalein. 20. In which of the following Oxalic acid is not present? A) Spinach. B) Tomatoes. C) Guava. D) Apples. Show Answer Correct Answer: D) Apples. 21. A salt is formed when nitric acid reacts with sodium hydroxide. What is the name of the salt? A) Sodium chloride. B) Sodium nitrate. C) Hydrogen Nitrate. D) Unique. Show Answer Correct Answer: B) Sodium nitrate. 22. When acid is put in water it releases which ions A) Oxygen ion. B) Hydroxide ions. C) Hydrogen ions. D) None of these. Show Answer Correct Answer: C) Hydrogen ions. 23. What salt is produced if you react Copper oxide with Sulfuric acid? A) Copper nitrate. B) Copper sulfate. C) Copper chloride. D) Copper phosphate. Show Answer Correct Answer: B) Copper sulfate. 24. The molar solubility of PbI$_{2}$ is 1.52 x 10$^{-3}$ M. Calculate the value of K$_{sp}$ for PbI$_{2}$. A) 3.51 x 10$^{-9}$. B) 1.40 x 10$^{-8}$. C) 4.62 x 10$^{-6}$. D) 1.52 x 10$^{-3}$. Show Answer Correct Answer: B) 1.40 x 10$^{-8}$. 25. What is organic acid? A) Occur naturally. B) Sulphuric acid. C) Malic acid. D) Nitric acid. Show Answer Correct Answer: C) Malic acid. ← 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