Karat is a measure of gold purity. Pure gold (24 karat) is soft. Gold for jewelry is typically alloyed with other metals like copper, silver, or zinc to increase its hardness and durability.
Which one of the following statements regarding gold is not correct?
Asked in UPSC Geoscientist 2022 · Topic: Metals, Minerals, Ores: Properties, Uses (Uses of common metals and their compounds in industries and daily life)
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Answer: C. 22 karat gold contains 22 parts of pure gold and 2 parts of iron to make it hard.
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