Multiple choice general knowledge science & technology

A quick and simple method commonly used to inspect whether a metal is stainless steel is to

  1. test if a magnet will be attracted to it

  2. test if it will react with sulfuric acid

  3. pass a current through it and measure its resistance

  4. measure its specific gravity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The magnet test is a common field screening method for identifying stainless steel. Most stainless steel (austenitic grades like 304) is non-magnetic, so a magnet won't stick. However, some stainless steels (ferritic/martensitic grades) are magnetic, so this test isn't definitive but serves as a quick indicator.

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