Multiple choice

Which of the following elements is solid in solid type solution?

  1. Air

  2. Alcohol in water

  3. Alloy

  4. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An alloy is a homogeneous mixture of two or more solid elements, where one is a metal. Examples include brass (copper + zinc) and steel (iron + carbon). Air is a gas mixture, alcohol in water is a liquid-liquid solution, not solid-solid.