Q1. The chemical name of lime water is:
Q2. All metal carbonates react with acids to give:
Q3. Lime water test is used to detect:
Q4. The colour of solution formed when CuO reacts with HCl is:
Q5. On passing excess CO₂ through lime water, the solution becomes:
Q6. Which of the following reactions produces CO₂?
Q7. NaOH reacts with HCl to form:
Q8. The general reaction of metallic oxide with acid is:
Q9. The reaction of a metal with an acid generally produces:
Q10. Sodium hydrogen carbonate reacts with acid to produce:
Q11. Which metal is most commonly used in the laboratory to study the reaction between metals and dilute acids?
Q12. The general reaction of acid with metal is:
Q13. Which gas is evolved in most reactions of acids with metals?
Q14. Baking soda reacts with acid in stomach producing:
Q15. Which substance shows no colour change in neutral solution with phenolphthalein?
Q16. Metals displace hydrogen from:
Q17. Metallic oxides behave like bases because they:
Q18. Which acid is commonly used to study the reaction between acids and metal carbonates in the laboratory?
Q19. Copper oxide dissolves in acid because it is:
Q20. Sodium carbonate reacts with dilute HCl to produce:
Q21. Carbon dioxide gas turns lime water milky due to formation of:
Q22. The products of neutralisation reaction are:
Q23. The reaction of acid with base always produces:
Q24. Which of the following is a basic oxide?
Q25. The gas evolved when a metal reacts with an acid burns with a:
Q26. When zinc granules react with dilute sulphuric acid, bubbles are seen because of the evolution of:
Q27. Phenolphthalein is colourless in:
Q28. When acid is added to a pink phenolphthalein solution, the colour:
Q29. In a neutralisation experiment, phenolphthalein turns pink when added to:
Q30. Soap solution is used to test hydrogen gas because:
Q31. The pink colour reappears when:
Q32. The white precipitate formed in lime water is:
Q33. Hydrogen gas is collected in soap bubbles because:
Q34. Zinc reacts with sodium hydroxide to produce:
Q35. Carbon dioxide turns lime water:
Q36. Limestone, chalk and marble are forms of:
Q37. The compound Ca(HCO₃)₂ is:
Q38. Hydrogen gas is identified by:
Q39. Zinc reacts with dilute sulphuric acid to form:
Q40. The gas evolved when metal carbonates react with acids is:
Q41. The gas produced when zinc reacts with sodium hydroxide is:
Q42. Copper oxide reacts with hydrochloric acid to form:
Q43. The salt formed in NaOH + HCl reaction is:
Q44. Neutralisation reaction is useful in treating:
Q45. Metallic oxides are generally:
Q46. Lime water becomes clear again on passing excess CO₂ because:
Q47. Which reaction does NOT produce hydrogen gas?
Q48. Reaction of metals with bases is:
Q49. The reaction between an acid and a base to form salt and water is called:
Q50. Sodium zincate is formed when zinc reacts with: