Acids, Bases & Salts MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. The bases give ______ ions in water (A) H⁺ (B) H⁻ (C) OH⁻ (D) H₃O⁺ 2. Which one is a Lewis acid? (A) AlCl₃ (B) OH⁻ (C) NH₃ (D) F⁻ 3. Which one is a Lewis base? (A) BF₃ (B) H₃O⁺ (C) NH₃ (D) AlCl₃ 4. The process in which base reacts with oil and forms soap is called ______ (A) Halogenation (B) Oxidation (C) Neutralization (D) Saponification 5. The basicity of CH₃COOH is (A) 1 (B) 2 (C) 3 (D) 4 6. The acidity of sodium hydroxide is (A) 4 (B) 2 (C) 3 (D) 1 7. Which one is alkali? (A) Cu(OH)₂ (B) KOH (C) Al(OH)₃ (D) Ba(OH)₂ 8. Alum is an example of (A) Double (B) Complex (C) Acidic (D) Basic 9. The pH of pure water is (A) 4 (B) 0 (C) 7 (D) 14 10. The solution having pH six is called (A) Strong acid (B) Strong base (C) Weak acid (D) Weak base 11. pH is equal to (A) −log[H⁺] (B) −log[OH⁻] (C) +log[H⁺] (D) +log[OH⁻] 12. The number of ionizable hydrogen atoms in an acid molecule is called its (A) Acidity (B) Allotropy (C) Basicity (D) Radioactivity 13. According to Lewis concept, an acid (A) Accept pair of electrons (B) Donate pair of electrons (C) Accept proton (D) Donate proton 14. KH₂PO₄ is a ______ salt (A) Basic (B) Acidic (C) Neutral (D) Double 15. The pH range of a basic solution is (A) 1 to 4 (B) 8 to 14 (C) 0 to 7 (D) 5 to 6 16. How many water molecules are in CuSO₄ crystal (A) 12 (B) 5 (C) 6 (D) 7 17. The nature of solution having pH more than 7 will be (A) Neutral (B) Basic (C) Acidic (D) Amphoteric 18. Which one is a double salt? (A) CuSO₄·5H₂O (B) Na₂CO₃·10H₂O (C) Na₂SO₄ (D) K₂SO₄·Al₂(SO₄)₃ 19. Effect of mixing more water in acidic solution (A) pH will increase (B) pH will decrease (C) pH will remain constant (D) pH will become 14 20. Which one has slippery touch? (A) Acid (B) Salt (C) Base (D) Double salt
