Acids bases and salts - One Line Questions

1. The pH of pure water at 25°C is: — 7
2. A basic salt is formed when: — A weak acid reacts with a strong base
3. The indicator methyl orange is red in acidic solutions, yellow in basic solutions, and orange in neutral solutions. This makes it suitable for titrating: — A strong acid with a weak base
4. Which of the following is a strong acid? — Hydrochloric acid
5. The sour taste of curd is due to the presence of which acid? — Lactic acid
6. Which acid is responsible for the sting of an ant? — Formic acid
7. A solution with a pH of 7 is considered to be: — Neutral
8. Which of the following is a salt of a strong acid and a strong base? — Sodium chloride
9. Which of the following is a basic salt? — Sodium carbonate
10. What is the pH of a strong acid solution? — Between 0 and 3
11. What is the pH of a strong base solution? — Between 11 and 14
12. What is the common name for sodium hydroxide? — Caustic soda
13. Quicklime is the common name for: — Calcium oxide
14. The chemical formula for slaked lime is: — Ca(OH)2
15. What is the chemical formula for calcium carbonate? — CaCO3
16. Which gas is primarily responsible for acid rain? — Nitrogen dioxide and sulfur dioxide
17. Which acid is found in vinegar? — Acetic acid
18. Which acid is present in sour milk? — Lactic acid
19. Which metal reacts with dilute hydrochloric acid to produce hydrogen gas? — Zinc
20. The point at which the acid and base have completely neutralized each other in a titration is known as the: — Equivalence point
21. What is the primary function of salts in biological systems? — Maintaining fluid balance and nerve impulse transmission
22. The pH of acid rain is typically: — Less than 5.6
23. The chemical formula for carbonic acid is: — H2CO3
24. Which acid is used in lead-acid batteries? — Sulfuric acid
25. Which acid is used in the manufacture of fertilizers? — Sulfuric acid
26. The process of dissolving a salt in water can result in a solution that is acidic, basic, or neutral depending on the nature of the parent acid and base. This is known as: — Hydrolysis of salts
27. The characteristic property of a base that it feels soapy to touch is due to: — Its reaction with skin oils
28. Lemon juice is sour due to the presence of which acid? — Citric acid
29. What is the chemical formula for common salt (sodium chloride)? — NaCl
30. A solution that resists changes in pH when small amounts of acid or base are added is called a: — Buffer solution
31. The reaction between an acid and a base is called: — Neutralization
32. Which gas is produced when a metal reacts with an acid? — Hydrogen
33. What is the pH range for acidic solutions? — pH < 7
34. Phenolphthalein is colorless in acidic solutions and pink in basic solutions. This property makes it useful as a: — pH indicator
35. Which indicator turns red in acidic solutions and blue in basic solutions? — Litmus
36. Which of the following is a natural indicator obtained from lichens? — Litmus
37. What is the common name for calcium hydroxide? — Slaked lime
38. When an acid reacts with a base, what are the typical products formed? — Salt and water
39. The reaction of an acid with a metal carbonate produces: — Salt, water, and carbon dioxide
40. Which of the following is a neutral salt? — Potassium nitrate
41. What is the main component of antacids used to relieve indigestion? — All of the above
42. Washing soda is chemically known as: — Sodium carbonate decahydrate
43. Which of the following is an example of an amphoteric substance? — Water
44. What is the chemical name for baking soda? — Sodium bicarbonate
45. Which of the following is an acidic salt? — Sodium bisulfate
46. Which of the following is a weak base? — Ammonium hydroxide
47. Which of the following is a characteristic property of acids? — They turn blue litmus paper red
48. Bases typically exhibit which of the following properties? — They have a pH greater than 7
49. The process of adding a base to an acid (or vice versa) to determine its concentration is called: — Titration
50. Which substance is used to neutralize excess acid in the stomach? — Baking soda
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