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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] medium exam-ready
Reaction of zinc with sodium hydroxide solution produces hydrogen gas and: (A) Zinc chloride (B) Zinc oxide (C) Sodium zincate (D) Zinc sulphate
  1. A Zinc chloride
  2. B Zinc oxide
  3. C Sodium zincate
  4. D Zinc sulphate
Generated by claude-sonnet-4-6 · 2026-06-26 01:03 · grounding rag
Model Answer

(C) Sodium zincate

Zinc reacts with NaOH solution to form sodium zincate (Na₂ZnO₂) and hydrogen gas.

Explanation

Zinc is an amphoteric metal — it reacts with both acids and bases. With NaOH, it forms sodium zincate (Na₂ZnO₂), not a chloride or sulphate (those require different acids). This reaction is a standard example of an amphoteric metal reacting with a base. Remember: Zn + 2NaOH → Na₂ZnO₂ + H₂↑.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.