Acid and Bases MCQs

1. What is the pH of a neutral solution?
A) 0
B) 7
C) 14
D) 1
Answer: B

2. Which of the following is a strong acid?
A) CH₃COOH
B) HCl
C) NH₃
D) NaOH
Answer: B

3. Which base is commonly known as caustic soda?
A) KOH
B) NaOH
C) Ca(OH)₂
D) NH₄OH
Answer: B

4. Which acid is present in vinegar?
A) Sulfuric acid
B) Nitric acid
C) Acetic acid
D) Hydrochloric acid
Answer: C

5. What is the pH range of acidic solutions?
A) 0–7
B) 7–14
C) 0–14
D) 7 only
Answer: A

6. Which ion is produced by acids in aqueous solution?
A) OH⁻
B) H⁺
C) Na⁺
D) Cl⁻
Answer: B

7. Which ion is produced by bases in aqueous solution?
A) H⁺
B) OH⁻
C) Cl⁻
D) SO₄²⁻
Answer: B
8. What color does litmus turn in an acidic solution?
A) Blue
B) Red
C) Green
D) Yellow
Answer: B

9. What color does phenolphthalein turn in a basic solution?
A) Colorless
B) Pink
C) Blue
D) Yellow
Answer: B

10. Which substance is a base?
A) HCl
B) NaOH
C) H₂SO₄
D) HNO₃
Answer: B