QuestionMetals and alloys / gold
Which one of the following statements regarding gold is not correct?
- (a) 24 karat gold is very soft.
- (b) 22 karat gold is generally used to make ornaments.
- (c) 22 karat gold contains 22 parts of pure gold and 2 parts of iron to make it hard.
- (d) 18 karat gold comprises of 75% gold mixed with 25% of copper or silver to make it hard.
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