This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 4 Salts – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 4 Salts Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Diksha added dilute sulphuric acid to lime water. Will the reaction mixture become hot or cool? A) Hot. B) Cool. C) All the above. D) None of the above. Show Answer Correct Answer: A) Hot. 2. China rose indicator turns acidic solutions to ..... A) Dark pink. B) Green. C) Yellow. D) Red. Show Answer Correct Answer: A) Dark pink. 3. Calcium Carbonate, CaCO$_{3}$ A) Soluble Salt. B) Insoluble Salt. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insoluble Salt. 4. Which of the following salt is soluble in water? A) Barium sulfate. B) Lead(II) carbonate. C) Calcium nitrate. D) Silver chloride. Show Answer Correct Answer: C) Calcium nitrate. 5. Bases are A) Sour. B) Sweet. C) Bitter. D) Salty. Show Answer Correct Answer: C) Bitter. 6. State whether the following compound is soluble or insoluble. Calcium sulfate CaSO$_{4 }$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: B) Insoluble. 7. What does the word insoluble mean? A) Does dissolve. B) Doesn't dissolve. C) Is part of a solid. D) None of the above. Show Answer Correct Answer: B) Doesn't dissolve. 8. Why do you add excess of the insoluble reactant when making a soluble salt? A) To make sure all the acid is used up. B) To separate the solid from the solution. C) To make sure a reaction occurs. D) To have the reaction happen faster. Show Answer Correct Answer: A) To make sure all the acid is used up. 9. Bicarbonate also means- A) Sodium carbonate. B) Calcium carbonate. C) Hydrogen carbonate. D) Potassium carbonate. Show Answer Correct Answer: C) Hydrogen carbonate. 10. Substance which are bitter in taste and soapy in touch is known as A) Salty. B) Sweet. C) Base. D) Acid. Show Answer Correct Answer: C) Base. 11. One drawback to a pH Meter is that it A) Is very expensive. B) Is not very accurate. C) Only tells you if a substance is an acid or a base. D) Is messy. Show Answer Correct Answer: A) Is very expensive. 12. Which one of the following types of medicines is used for treating indigestion? A) Antibiotics. B) Analgesic. C) Antacid. D) Antiseptic. Show Answer Correct Answer: C) Antacid. 13. Bases 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: A) 7 and 14. 14. Complete this equation:sulphuric 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. 15. 5 ml of solution of NaOH is completly neutralized by 4 ml of Hcl. If we take 10 ml of NaOH, the amount of Hcl required to neutralize it will be? A) 4ml. B) 8ml. C) 12ml. D) 16ml. Show Answer Correct Answer: B) 8ml. 16. Is Na$_{2}$CO$_{3}$ A) Soluble. B) Insoluble. C) All the above. D) None of the above. Show Answer Correct Answer: A) Soluble. 17. When few drops of substance X are added to phenolphthalein solution, pink color is observed. The nature of substance X will be A) Acidic. B) Basic. C) Neutral. D) None of the above. Show Answer Correct Answer: B) Basic. 18. In a reaction, we have sulphuric acid with us and a base, the product formed was salt and water, casn you identify the type of salt formed? A) Sulphate. B) Chloride. C) Nitrate. D) None of these. Show Answer Correct Answer: A) Sulphate. 19. Sodium bicarbonate is commonly called A) Lime water. B) Slaked lime. C) Washing soda. D) Baking soda. Show Answer Correct Answer: A) Lime water. 20. Organic Acids A) Plants and animals. B) Minerals. C) Car. D) Grabage. Show Answer Correct Answer: A) Plants and animals. 21. What are bases soluble in water called? A) Alkali. B) Alkali. C) Basic salt. D) None of these. Show Answer Correct Answer: A) Alkali. 22. If the substrates of the reaction are bacl $ _ {2} $ I on $ _ {2} $ so $ _ {4} $, this product insoluble in water will be: A) Sulfate (VI) sodium. B) Bromank sodu. C) Sodium chloride. D) Sulphate (VI) bar. Show Answer Correct Answer: D) Sulphate (VI) bar. 23. The acid that our stomach releases is:- A) Nitric acid. B) Hydrochloric acid. C) Sulphuric acid. D) None of these. Show Answer Correct Answer: B) Hydrochloric acid. 24. Hydrochloric acid and sodium hydroxide react to form ..... & ..... A) Sodium chloride and water. B) Calcium hydroxide and carbon dioxide. C) Sodium chloride and carbon dioxide. D) Magnesium hydroxide and salt. Show Answer Correct Answer: A) Sodium chloride and water. 25. The solutions which do not change colour of either red or blue litmus are known as? A) Acidic solution. B) Neutral solution. C) Basic solution. D) None of the above. Show Answer Correct Answer: B) Neutral solution. ← 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 9Class 7 Science Chapter 4 Salts Quiz 10Class 7 Science Chapter 4 Salts Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books