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NDA 2023 GAT · General Knowledge · Metals, Alloys and Corrosion · medium

Alloys are generally harder than the pure metals from which they are made. 2. Brass is an alloy of copper and tin.

Single correct option

Which of the following statements is/are correct?
1. Alloys are generally harder than the pure metals from which they are made.
2. Brass is an alloy of copper and tin.
  1. A. 1 only
  2. B. 2 only
  3. C. Both 1 and 2
  4. D. Neither 1 nor 2
Show answer and solution

Answer: (A) 1 only

Alloying disturbs the regular metal lattice and makes the material harder and stronger. Brass is copper with zinc; the alloy of copper and tin is bronze. So only statement 1 is correct.
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Original question written in the NDA 2023 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake