This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Salts > Class 7 Science Chapter 4 Salts – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 13 (15 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Acid reacts with carbonates to form salt, water and ..... A) Hydrogen gas. B) Oxygen gas. C) Metal carbonate. D) Carbon dioxide gas. Show Answer Correct Answer: D) Carbon dioxide gas. 2. Which substance is a base? A) Carbon dioxide. B) Zinc sulphate. C) Magnesium oxide. D) Sodium chloride. Show Answer Correct Answer: C) Magnesium oxide. 3. What is the word equation for Neutralization? A) Acid + Carbonate $\rightarrow$ Salt + Water + Carbon Dioxide. B) Acid + Carbonate $\rightarrow$ Salt + Water. C) Acid + Alkali $\rightarrow$ Salt + Water + Carbon Dioxide. D) Acid + Alkali $\rightarrow$ Salt + Water. Show Answer Correct Answer: D) Acid + Alkali $\rightarrow$ Salt + Water. 4. Acids have soapy texture. True or False? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. The pH of a strong base would be: A) 13-14. B) 8-9. C) 1-2. D) 5-6. Show Answer Correct Answer: A) 13-14. 6. What would be a suitable solution for decorating a greeting card made of turmeric paper? A) Soda water. B) Baking soda solution. C) Lemon juice. D) Vinegar. Show Answer Correct Answer: B) Baking soda solution. 7. Which is the most suitable method for separating the products of 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. 8. Salt crystal form when a saturated salt solution is cooled down.Hablur salt is produced when the saturated salt solution is cooled. A) TRUE / RIGHT. B) False / wrong. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE / RIGHT. 9. Which of these compounds is an acidic salt? A) Hydrogen Phosphate. B) Potassium Carbonate. C) Sodium Acetate. D) Ammonium Nitrate. Show Answer Correct Answer: D) Ammonium Nitrate. 10. THE ACID PRESENT IN THE CELLS OF ALL HUMAN BEINGS? A) DEOXYRIBONUCLEIC ACID. B) OXY NUCLEIC ACID. C) NUCLEIC ACID. D) NONE. Show Answer Correct Answer: A) DEOXYRIBONUCLEIC ACID. 11. When a drop of vinegar solution is put on the litmus paper, it turns A) Green. B) Blue. C) Red. D) Yellow. Show Answer Correct Answer: C) Red. 12. Which of the following is the product of neutralisation reaction? A) Salt. B) Water. C) Heat. D) All of the above. Show Answer Correct Answer: D) All of the above. 13. Which of these salt is prepared by precipitation reaction? A) Silver chloride. B) Sodium bissulphate. C) Sodium chloride. D) Sodium hydroxide. Show Answer Correct Answer: A) Silver chloride. 14. Choose the correct definition of MINERAL ACIDS. A) Minerals present in the Earth. B) King of chemicals. C) Found in plants and animals. D) Minerals found only in herbs. Show Answer Correct Answer: A) Minerals present in the Earth. 15. Which method is used to prepare silver chloride? A) Add excess solid reactant to acid. B) Titration. C) Precipitation. D) None of the above. Show Answer Correct Answer: C) Precipitation. ← PreviousRelated QuizzesScience QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books