Acids, Bases and Salts
36 NDA Chemistry previous year questions (PYQs) from 16 papers, 2017 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 15 easy · 18 moderate · 3 hard.
- Most-asked subtopics: pH Scale and Common Substances (9), Common Acids: Names, Formulas and Uses (8), Salts and Common Compounds (7).
- Updated 14 September 2026.
#1Acid-Base Theory: Concepts, Oxides and Electrolytes
#2Acid-Base Theory: Concepts, Oxides and Electrolytes
#3Acid-Base Theory: Concepts, Oxides and Electrolytes
#4Acid-Base Theory: Concepts, Oxides and Electrolytes
#5Acid-Base Theory: Concepts, Oxides and Electrolytes
Done a few? Here’s your next move
- NDA · Apr 2026 · Q87Moderate
#6Acid-Base Theory: Concepts, Oxides and Electrolytes
- NDA · Apr 2025 · Q76Moderate
#7Acid-Base Theory: Concepts, Oxides and Electrolytes
- NDA · Apr 2017 · Q58Moderate
#8Common Acids: Names, Formulas and Uses
#9Common Acids: Names, Formulas and Uses
- NDA · Sep 2018 · Q79Moderate
#10Common Acids: Names, Formulas and Uses
- NDA · Apr 2019 · Q102Moderate
#11Common Acids: Names, Formulas and Uses
- NDA · Apr 2021 · Q56Moderate
#12Common Acids: Names, Formulas and Uses
#13Common Acids: Names, Formulas and Uses
- NDA · Sep 2022 · Q105Moderate
#14Common Acids: Names, Formulas and Uses
- NDA · Sep 2023 · Q89Moderate
#15Common Acids: Names, Formulas and Uses
- NDA · Sep 2026 · Q79Moderate
#16pH Scale and Common Substances
- NDA · Apr 2020 · Q145Moderate
#17pH Scale and Common Substances
#18pH Scale and Common Substances
- NDA · Apr 2018 · Q65Moderate
#19pH Scale and Common Substances
- NDA · Sep 2018 · Q103Moderate
#20pH Scale and Common Substances
#21pH Scale and Common Substances
#22pH Scale and Common Substances
#23pH Scale and Common Substances
#24pH Scale and Common Substances
- NDA · Apr 2020 · Q146Moderate
#25Salts and Common Compounds
#26Salts and Common Compounds
- NDA · Apr 2018 · Q68Moderate
#27Salts and Common Compounds
#28Salts and Common Compounds
- NDA · Apr 2021 · Q100Moderate
#29Salts and Common Compounds
#30Salts and Common Compounds
- NDA · Apr 2025 · Q81Moderate
#31Salts and Common Compounds
#32Water of Crystallization
- NDA · Sep 2026 · Q83Moderate
#33Water of Crystallization
#34Water of Crystallization
- NDA · Sep 2022 · Q104Moderate
#35Water of Crystallization
#36Water of Crystallization