WBCS.LIVE practice question

The iron sheet kept in moist air covered with rust. The rust is

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. a mixture of iron, oxygen and water
  2. an element
  3. a compound
  4. a mixture of iron and dust

Correct answer and explanation

Correct answer: a mixture of iron, oxygen and water