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Percentage of gold in 21.6 carat gold is (a) 21.6% (b) 90% (c) 10% (d) 70%

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ago in Chemistry by (11.9k points)

Percentage of gold in 21.6 carat gold is

(a) 21.6%

(b) 90%

(c) 10%

(d) 70%

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1 Answer

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ago by (11.7k points)

Correct option is (b) 90%

21.6 carat gold contains 21.6 parts of gold in 24 parts by weight of alloy.

% of gold in 21.6 carat gold \(=\frac {21.6}{24} \times 100 = 90 \%\).

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