20 MCQs (without answers) based on the topic Indicators, Acids, Bases and Salts from Class 10 Science (Chapter: Acids, Bases and Salts – CBSE):
🧪 MCQs: Indicators, Acids, Bases and Salts (No Answers)
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Which of the following turns red litmus blue?
A. Vinegar
B. Lemon juice
C. Soap solution
D. Orange juice -
Phenolphthalein gives which colour in basic solution?
A. Red
B. Colourless
C. Pink
D. Blue -
Which of the following is a natural indicator?
A. Methyl orange
B. Phenolphthalein
C. Litmus
D. All of the above -
Turmeric turns _______ in basic solution.
A. Red
B. Yellow
C. Blue
D. Orange -
Which of the following is used to detect acids and bases?
A. Salt
B. Indicator
C. Metal
D. Water -
Which acid is present in lemon?
A. Acetic acid
B. Citric acid
C. Formic acid
D. Oxalic acid -
What is the chemical formula of baking soda?
A. NaCl
B. Na₂CO₃
C. NaHCO₃
D. CaCO₃ -
Which gas is evolved when acid reacts with metal carbonates?
A. Oxygen
B. Carbon dioxide
C. Hydrogen
D. Nitrogen -
Which of the following is an acidic salt?
A. Na₂CO₃
B. NaCl
C. NH₄Cl
D. KNO₃ -
Which of the following salts is used in toothpaste?
A. Sodium chloride
B. Sodium bicarbonate
C. Calcium carbonate
D. Potassium nitrate -
What is the colour of methyl orange in acid?
A. Red
B. Yellow
C. Blue
D. Pink -
Which of the following acids is used in car batteries?
A. Hydrochloric acid
B. Nitric acid
C. Sulphuric acid
D. Acetic acid -
What is formed when acid reacts with base?
A. Salt
B. Water
C. Salt and water
D. None of these -
Which among the following is a strong base?
A. NaOH
B. NH₄OH
C. Ca(OH)₂
D. Mg(OH)₂ -
Which of the following will show pH less than 7?
A. Soap solution
B. Lemon juice
C. Baking soda
D. Toothpaste -
Which of the following is used to make antacid tablets?
A. Hydrochloric acid
B. Sodium hydroxide
C. Magnesium hydroxide
D. Sodium chloride -
Common salt is obtained from seawater by the process of:
A. Filtration
B. Sedimentation
C. Crystallization
D. Evaporation -
The salt formed by strong acid and strong base is:
A. Acidic
B. Basic
C. Neutral
D. Depends on the conditions -
Which of these is a weak acid?
A. HCl
B. H₂SO₄
C. CH₃COOH
D. HNO₃ -
Which salt is used for making bleaching powder?
A. Sodium chloride
B. Potassium chloride
C. Calcium chloride
D. Ammonium chloride
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