NMMS CLASS 7 Acids, Bases and Salts 61- -90

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NMMS CLASS 7 Acids, Bases and Salts 61- -90👇

61. Which of the following is sour in taste?

  • Vinegar
  • Soap
  • Lemon juice
  • Baking soda

62. Which of the following substances is used as an antacid?

  • Vinegar
  • Lemon juice
  • Salt solution
  • Milk of magnesia

63. Which of the following is basic in nature?

  • Vinegar
  • Curd
  • Lemon juice
  • Soap solution

64. What does an acid produce when dissolved in water?

  • Hydroxide ions
  • Carbon dioxide
  • Hydrogen ions
  • Oxygen

65. What does a base produce when dissolved in water?

  • Hydrogen ions
  • Hydroxide ions
  • Oxygen gas
  • Salt

66. Which indicator turns blue in a basic solution?

  • Litmus
  • Turmeric
  • Phenolphthalein
  • Methyl orange

67. Which acid is naturally found in curd?

  • Citric acid
  • Lactic acid
  • Formic acid
  • Carbonic acid

68. Which of these is a household acid?

  • Toothpaste
  • Baking soda
  • Washing soda
  • Vinegar

69. What type of taste do bases have?

  • Sour taste
  • Sweet taste
  • Salty taste
  • Bitter taste

70. Which of the following is neutral in nature?

  • Pure water
  • Lemon juice
  • Vinegar
  • Soap solution

71. Which of the following turns red litmus blue?

  • Vinegar
  • Lemon juice
  • Curd
  • Baking soda solution

72. Which of these acids is used in car batteries?

  • Citric acid
  • Acetic acid
  • Nitric acid
  • Sulphuric acid

73. Which acid is used in pickles for sour taste?

  • Formic acid
  • Carbonic acid
  • Acetic acid
  • Sulphuric acid

74. What is the chemical name of common salt?

  • Sodium chloride
  • Calcium carbonate
  • Ammonium chloride
  • Sodium bicarbonate

75. Which of these is a base used in soap making?

  • Sulphuric acid
  • Acetic acid
  • Carbon dioxide
  • Sodium hydroxide

76. What is the nature of lemon juice?

  • Basic
  • Neutral
  • Alkaline
  • Acidic

77. Which of these turns turmeric red?

  • Soap water
  • Vinegar
  • Curd
  • Lemon juice

78. Which salt is known as baking soda?

  • Sodium chloride
  • Ammonium chloride
  • Calcium carbonate
  • Sodium bicarbonate

79. Which of the following is a weak acid?

  • Sulphuric acid
  • Nitric acid
  • Hydrochloric acid
  • Carbonic acid

80. Which one is used to cure indigestion caused by excess acid?

  • Salt
  • Acidic drink
  • Vinegar
  • Antacid

81. Which of the following gives a soapy feel?

  • Base
  • Acid
  • Salt
  • Water

82. What type of solution has pH value 7?

  • Neutral solution
  • Acidic solution
  • Basic solution
  • Salt solution

83. Which gas is produced when acid reacts with metal?

  • Oxygen
  • Hydrogen
  • Carbon dioxide
  • Nitrogen

84. Which acid is found in oranges?

  • Lactic acid
  • Carbonic acid
  • Acetic acid
  • Citric acid

85. Which of the following is used to make washing soda?

  • Calcium sulphate
  • Sodium chloride
  • Sodium nitrate
  • Sodium carbonate

86. Which substance can be used to reduce acidity of soil?

  • Sulphuric acid
  • Vinegar
  • Slaked lime
  • Ammonium chloride

87. Which of these indicators is naturally available?

  • Phenolphthalein
  • Methyl orange
  • Universal indicator
  • Turmeric

88. What type of solution turns blue litmus red?

  • Basic solution
  • Acidic solution
  • Neutral solution
  • Salt solution

89. Which acid is present in soda water?

  • Acetic acid
  • Sulphuric acid
  • Citric acid
  • Carbonic acid

90. Which of these substances is used for bleaching?

  • Washing soda
  • Baking soda
  • Lime water
  • Bleaching powder
Location: Mogalturu, Andhra Pradesh 534281, India

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