Which of the following is a strong acid?
A) Hydrochloric acid (HCl)
B) Acetic acid (CH₃COOH)
C) Carbonic acid (H₂CO₃)
D) Citric acid
Which ion is responsible for the acidic nature of a solution?
A) H⁺ (Hydrogen ion)
B) OH⁻ (Hydroxide ion)
C) Na⁺ (Sodium ion)
D) Cl⁻ (Chloride ion)
Which of the following is a strong base?
A) Sodium hydroxide (NaOH)
B) Ammonia (NH₃)
C) Calcium carbonate (CaCO₃)
D) Acetic acid (CH₃COOH)
What is the pH of a neutral solution?
A) 7
B) 1
C) 14
D) 10
Which acid is found in lemon juice?
A) Citric acid
B) Sulfuric acid
C) Acetic acid
D) Nitric acid
What type of reaction occurs when an acid reacts with a base?
A) Neutralization
B) Oxidation
C) Reduction
D) Combustion
Which of the following is a basic solution?
A) Sodium hydroxide (NaOH)
B) Hydrochloric acid (HCl)
C) Vinegar
D) Lemon juice
Which salt is formed from the reaction of hydrochloric acid and sodium hydroxide?
A) Sodium chloride (NaCl)
B) Potassium sulfate (K₂SO₄)
C) Calcium carbonate (CaCO₃)
D) Magnesium nitrate (Mg(NO₃)₂)
What is the pH range of acidic solutions?
A) 0-6
B) 7-14
C) 8-14
D) 7-10
Which substance is commonly used to neutralize acidic soil?
A) Lime (CaO)
B) Table salt (NaCl)
C) Sugar
D) Vinegar
Which of the following is an example of a weak acid?
A) Acetic acid (CH₃COOH)
B) Sulfuric acid (H₂SO₄)
C) Nitric acid (HNO₃)
D) Hydrochloric acid (HCl)
Which gas is released when an acid reacts with a metal?
A) Hydrogen gas (H₂)
B) Oxygen gas (O₂)
C) Carbon dioxide (CO₂)
D) Nitrogen gas (N₂)
What color does blue litmus paper turn in an acidic solution?
A) Red
B) Blue
C) Green
D) Yellow
Which acid is commonly found in vinegar?
A) Acetic acid
B) Sulfuric acid
C) Nitric acid
D) Hydrochloric acid
Which of the following bases is used in soap making?
A) Sodium hydroxide (NaOH)
B) Hydrochloric acid (HCl)
C) Carbonic acid (H₂CO₃)
D) Acetic acid (CH₃COOH)
What happens when an acid reacts with a carbonate?
A) Carbon dioxide is released
B) Oxygen gas is produced
C) A salt and hydrogen gas are formed
D) Water evaporates
What is the pH range of basic solutions?
A) 8-14
B) 0-6
C) 7
D) 2-5
Which base is commonly found in baking soda?
A) Sodium bicarbonate (NaHCO₃)
B) Calcium hydroxide (Ca(OH)₂)
C) Magnesium oxide (MgO)
D) Potassium hydroxide (KOH)
What color does red litmus paper turn in a basic solution?
A) Blue
B) Green
C) Yellow
D) Red
Which of the following is an amphoteric substance?
A) Water (H₂O)
B) Hydrochloric acid (HCl)
C) Sodium hydroxide (NaOH)
D) Sulfuric acid (H₂SO₄)
Which of the following acids is used in car batteries?
A) Sulfuric acid (H₂SO₄)
B) Acetic acid (CH₃COOH)
C) Citric acid
D) Hydrochloric acid (HCl)
Which gas is produced when an acid reacts with a metal carbonate?
A) Carbon dioxide (CO₂)
B) Hydrogen (H₂)
C) Oxygen (O₂)
D) Nitrogen (N₂)
Which of the following acids is used in soft drinks?
A) Phosphoric acid (H₃PO₄)
B) Sulfuric acid (H₂SO₄)
C) Nitric acid (HNO₃)
D) Hydrochloric acid (HCl)
Which acid is found in the human stomach?
A) Hydrochloric acid (HCl)
B) Acetic acid (CH₃COOH)
C) Sulfuric acid (H₂SO₄)
D) Carbonic acid (H₂CO₃)
Which substance is formed when an acid reacts with a base?
A) Salt and water
B) Only water
C) Only salt
D) Carbon dioxide
Which of the following is a strong base?
A) Potassium hydroxide (KOH)
B) Ammonia (NH₃)
C) Acetic acid (CH₃COOH)
D) Hydrochloric acid (HCl)
