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Science — CBSE Class 10 board question

Q1. [1]
Alloys are homogeneous mixture of metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents ?
  1. (A) Brass
  2. (B) Bronze
  3. (C) Amalgam
  4. (D) Steel
Previously asked in CBSE board exam
2026 31/4/1 Q22
Generated by claude-sonnet-4-6 · 2026-06-15 06:45 · grounding rag
Model Answer

(D) Steel

Steel is an alloy of iron (metal) and carbon (non-metal). Brass (copper + zinc) and Bronze (copper + tin) contain only metals, and amalgam contains mercury + another metal.

Explanation

Examiners expect you to recall the composition of common alloys. Steel = Fe + C (carbon is a non-metal) — this is the key fact. Brass = Cu + Zn; Bronze = Cu + Sn; Amalgam = Hg + another metal — all metal-only alloys.

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