AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
An alkali is a base that dissolves in water and produces OH⁻ (hydroxide) ions in solution. For example, NaOH and KOH are alkalis.
Source: Chapter 2, Section 2.2
The key distinction examiners look for is: all alkalis are bases, but not all bases are alkalis — only water-soluble bases are alkalis. Mentioning OH⁻ ion production is essential for full marks.