Q.

The ratio of Pure gold and 18 carot gold is –

A. 60%
B. 75%
C. 80%
D. 100%
Answer» B. 75%
Explanation: 24-karat gold is pure (while 100% purity is unattainable, this designation is permitted in commerce for 99.95% purity), 18- karat gold is 18 parts gold, 6 parts another metal (forming an alloy with 75% gold).
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