Acid and Bases MCQs

80. Which acid is found in apples?
A) Citric acid
B) Malic acid
C) Lactic acid
D) Formic acid
Answer: B

81. Which acid is used in photography?
A) HCl
B) HNO₃
C) Acetic acid
D) H₂SO₄
Answer: C

82. Which base is used in glass making?
A) Na₂CO₃
B) HCl
C) H₂SO₄
D) CO₂
Answer: A

83. Which acid is used in dye industry?
A) H₂SO₄
B) HCl
C) HNO₃
D) CH₃COOH
Answer: A

84. Which base is used in paper industry?
A) NaOH
B) HCl
C) HNO₃
D) CO₂
Answer: A

85. Which acid is used in medicine?
A) HCl
B) Aspirin (acetylsalicylic acid)
C) H₂SO₄
D) HNO₃
Answer: B

86. Which base is used as antacid?
A) NaOH
B) Mg(OH)₂
C) KOH
D) CaO
Answer: B

87. Which acid is used in cleaning toilets?
A) HCl
B) HNO₃
C) H₂SO₄
D) CH₃COOH
Answer: A

88. Which base reacts with acid to form salt and water?
A) All bases
B) Only weak bases
C) Only strong bases
D) None
Answer: A

89. Which acid is found in curd?
A) Lactic acid
B) Citric acid
C) Formic acid
D) Acetic acid
Answer: A

90. Which base is used in baking?
A) NaHCO₃
B) NaOH
C) KOH
D) CaO
Answer: A