Multiple choice

The purity of gold is expressed in carats. The purest form of gold is ____.

  1. 25 carats

  2. 24 carats

  3. 23 carats

  4. 22 carats

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

24 carat gold is 99.9% pure gold. The carat system measures purity in 1/24 parts - so 24 carats means 24 out of 24 parts are pure gold. Lower carats like 22K contain other metals like copper or silver for durability.