Correct option is B
The correct answer is (b) 75%.
Percentage of Pure Gold in 18-Carat Gold:
- Gold purity is measured in carats, with 24-carat gold being 100% pure.
- 18-carat gold means 18 parts out of 24 are pure gold, while the remaining 6 parts consist of other metals like copper or silver.
- Calculation:Percentage of Pure Gold=1824×100=75%\text{Percentage of Pure Gold} = \frac{18}{24} \times 100 = 75\%Percentage of Pure Gold = 18/24×100=75%
Gold Purity for Other Carats:
- 24-Carat Gold: 100% pure gold.
- 22-Carat Gold: 91.67% pure gold.
- 14-Carat Gold: 58.33% pure gold.
- 10-Carat Gold: 41.67% pure gold.
Additional Information:
- Gold:
- Symbol: Au (from Latin Aurum).
- Properties: Soft, malleable, ductile, and highly conductive.
- Uses: Jewelry, electronics, currency reserves, and investments.
- Occurrence: Found in ores, rivers, and mining deposits.
- Significance: Valued for its rarity, beauty, and non-corrosive nature.
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