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Science — CBSE Class 10 board question

Q1. [1]
Two metals zinc and tin are dissolved separately in definite proportions in molten copper (the primary metal) to obtain two different alloys respectively known as :
  1. (A) Bronze and Brass
  2. (B) Brass and Solder
  3. (C) Brass and Bronze
  4. (D) Solder and Bronze
Previously asked in CBSE board exam
2025 31/2/1 Q5
Generated by claude-sonnet-4-6 · 2026-06-15 06:47 · grounding rag
Model Answer

(C) Brass and Bronze

Zinc dissolved in molten copper gives brass, and tin dissolved in molten copper gives bronze.

Explanation

The question tests knowledge of common copper-based alloys. Remember: Brass = Copper + Zinc; Bronze = Copper + Tin. The order in the question is zinc first, then tin — so the answer must be Brass first, then Bronze, making (C) correct. Solder is an alloy of lead and tin, not copper-based.

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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.