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Acids Bases Salts and Solutions Competitive Exams

100 questions · General Science

  1. Question 1 of 100

    An acid that only partially ionises in water is called a:

  2. Question 2 of 100

    On the pH scale, bases have a value:

  3. Question 3 of 100

    The chemical formula of sodium hydroxide is:

  4. Question 4 of 100

    According to the Lewis theory, a base is defined as a substance that:

  5. Question 5 of 100

    When an acid reacts with a reactive metal, the products are typically a salt and:

  6. Question 6 of 100

    The air we breathe is best described chemically as a:

  7. Question 7 of 100

    Bases generally taste bitter and feel:

  8. Question 8 of 100

    The substance that dissolves in a solvent to form a solution is called the:

  9. Question 9 of 100

    Testing a solution with barium chloride, producing a white precipitate, confirms the presence of:

  10. Question 10 of 100

    When an acid reacts with a metal carbonate, the products are a salt, water and:

  11. Question 11 of 100

    The acid present in vinegar is:

  12. Question 12 of 100

    Titration is a laboratory technique mainly used to determine:

  13. Question 13 of 100

    The amount of solute present in a given amount of solvent or solution is called its:

  14. Question 14 of 100

    The chemical name for baking soda is:

  15. Question 15 of 100

    The chemical formula of sulphuric acid is:

  16. Question 16 of 100

    On a universal indicator chart, a strong base typically appears:

  17. Question 17 of 100

    A salt formed from a strong acid and a weak base, such as ammonium chloride, is typically:

  18. Question 18 of 100

    Bases turn red litmus paper:

  19. Question 19 of 100

    The reaction of a base with an acid, producing salt and water, is called:

  20. Question 20 of 100

    Phenolphthalein, a common acid-base indicator, is typically pink in base and:

  21. Question 21 of 100

    Common salt (sodium chloride) is widely used in food mainly to:

  22. Question 22 of 100

    A solution that resists changes in pH when small amounts of acid or base are added is a:

  23. Question 23 of 100

    For gases dissolving in liquids, solubility generally:

  24. Question 24 of 100

    The acid present in sour milk and yogurt is:

  25. Question 25 of 100

    A base that is soluble in water is specifically called an:

  26. Question 26 of 100

    An acid that ionises (dissociates) almost completely in water is called a:

  27. Question 27 of 100

    According to the Bronsted-Lowry theory, an acid is defined as a substance that:

  28. Question 28 of 100

    Colligative properties of a solution, such as boiling point elevation, depend mainly on the:

  29. Question 29 of 100

    The strong acid commonly used in car (lead-acid) batteries is:

  30. Question 30 of 100

    A solution whose concentration is precisely known and used as a reference in titrations is called a:

  31. Question 31 of 100

    Potassium nitrate, used in fertilisers and gunpowder, is commonly called:

  32. Question 32 of 100

    Adding more solvent to a solution to reduce its concentration is called:

  33. Question 33 of 100

    A solution with a pH of exactly 7 at room temperature is considered to be:

  34. Question 34 of 100

    Baking soda (sodium bicarbonate) in solution is:

  35. Question 35 of 100

    Tannic acid, which gives a characteristic astringent taste, is commonly found in:

  36. Question 36 of 100

    Molarity is a common unit of concentration expressed as moles of solute per:

  37. Question 37 of 100

    Water molecules chemically bound within the crystal structure of a salt are called:

  38. Question 38 of 100

    The chemical name for common table salt is:

  39. Question 39 of 100

    The reaction of a salt with water, which can affect the resulting solution's pH, is called:

  40. Question 40 of 100

    Lime water used in chemistry tests is a solution of:

  41. Question 41 of 100

    The acid present in citrus fruits such as lemon is:

  42. Question 42 of 100

    A homogeneous mixture formed by dissolving a solute in a solvent is called a:

  43. Question 43 of 100

    On the standard pH scale used in chemistry, values typically range from:

  44. Question 44 of 100

    A substance that can react as both an acid and a base is described as:

  45. Question 45 of 100

    The salt formed from the reaction of hydrochloric acid and sodium hydroxide is:

  46. Question 46 of 100

    Tincture of iodine, used as an antiseptic, is an example of a solution of a solid dissolved in:

  47. Question 47 of 100

    A solution that has dissolved the maximum solute possible at a given temperature is called:

  48. Question 48 of 100

    The chemical formula of nitric acid is:

  49. Question 49 of 100

    A base that only partially dissociates in water is called a:

  50. Question 50 of 100

    Ammonia gas dissolved in water forms the weak base:

  51. Question 51 of 100

    According to the Lewis theory, an acid is defined as a substance that:

  52. Question 52 of 100

    Concentrated sulphuric acid is widely used industrially mainly as a:

  53. Question 53 of 100

    Sodium hydroxide, used in making soap, is commonly known as:

  54. Question 54 of 100

    A salt bridge in an electrochemical cell allows the flow of ions to balance charge between:

  55. Question 55 of 100

    The reaction between an acid and a base that produces a salt is called:

  56. Question 56 of 100

    In soap-making (saponification), alkalis react with fats and oils to form:

  57. Question 57 of 100

    According to the Bronsted-Lowry theory, a base is defined as a substance that:

  58. Question 58 of 100

    The substance in which a solute dissolves is called the:

  59. Question 59 of 100

    The chemical formula of hydrochloric acid is:

  60. Question 60 of 100

    Water is often described as the universal solvent because it:

  61. Question 61 of 100

    A salt that has lost its water of crystallisation upon heating is described as:

  62. Question 62 of 100

    The reaction of an acid with a base to form salt and water is called:

  63. Question 63 of 100

    Plaster of Paris, used in casts and moulds, is derived by heating:

  64. Question 64 of 100

    A salt formed from a weak acid and a weak base, such as ammonium acetate, has a pH that is generally:

  65. Question 65 of 100

    A solution that can still dissolve more solute at a given temperature is called:

  66. Question 66 of 100

    Carbonic acid, found in fizzy drinks, is formed when carbon dioxide dissolves in:

  67. Question 67 of 100

    Milk of magnesia, used as an antacid, contains:

  68. Question 68 of 100

    A substance that produces OH- ions (hydroxide ions) in water is called a:

  69. Question 69 of 100

    The acid present in the human stomach, aiding digestion, is:

  70. Question 70 of 100

    Sodium chloride, a salt of a strong acid and strong base, has a pH of approximately:

  71. Question 71 of 100

    A base that dissociates almost completely in water is called a:

  72. Question 72 of 100

    Two liquids that do not mix with each other, such as oil and water, are described as:

  73. Question 73 of 100

    Testing for a carbonate ion with dilute acid produces a gas that turns limewater:

  74. Question 74 of 100

    Antacid tablets relieve heartburn mainly by:

  75. Question 75 of 100

    On the pH scale, acids have a value:

  76. Question 76 of 100

    A solution of copper sulfate characteristically appears:

  77. Question 77 of 100

    Epsom salt, used in bathing and as a laxative, is chemically known as:

  78. Question 78 of 100

    A salt formed from a strong acid and a strong base typically has a pH of about:

  79. Question 79 of 100

    The chemical formula of potassium hydroxide is:

  80. Question 80 of 100

    The ability of a substance to dissolve in a given solvent is called its:

  81. Question 81 of 100

    Liquids that mix completely in all proportions, such as water and alcohol, are called:

  82. Question 82 of 100

    An indicator that shows a range of colours corresponding to different pH values is called:

  83. Question 83 of 100

    A salt formed from a weak acid and a strong base, such as sodium carbonate, is typically:

  84. Question 84 of 100

    The compound formed, along with water, when an acid reacts with a base is called a:

  85. Question 85 of 100

    Nitric acid is an important raw material in the manufacture of:

  86. Question 86 of 100

    A substance that produces H+ ions (hydrogen ions) in water is called an:

  87. Question 87 of 100

    The acid responsible for the sting of ants and some insect bites is:

  88. Question 88 of 100

    Gypsum, used in making plaster and cement, is chemically known as:

  89. Question 89 of 100

    Acid rain is mainly caused by atmospheric pollutants such as sulphur dioxide and:

  90. Question 90 of 100

    Acids turn blue litmus paper:

  91. Question 91 of 100

    Alloys such as brass and steel are commonly classified as examples of:

  92. Question 92 of 100

    A common household base, found in some cleaning solutions, is:

  93. Question 93 of 100

    For most solid solutes dissolving in water, solubility generally:

  94. Question 94 of 100

    Acids generally taste:

  95. Question 95 of 100

    Washing soda, used in cleaning, is chemically known as:

  96. Question 96 of 100

    The pH of a concentrated solution of a strong alkali like sodium hydroxide is typically close to:

  97. Question 97 of 100

    An unstable solution holding more dissolved solute than is normally possible is called:

  98. Question 98 of 100

    Silver nitrate solution is commonly used in laboratories to test for the presence of:

  99. Question 99 of 100

    Ammonium chloride, commonly used in dry cell batteries, is a salt that is generally:

  100. Question 100 of 100

    Calcium hydroxide is commonly known as:

Question 1 / 100

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