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Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistrySome Basic Concepts of Chemistry1 Mark
MCQ
$18$ carat gold contains ?
  • A
    $18\%$ gold
  • B
    $4\%$ gold
  • ✓
    $75\%$ gold
  • D
    $60\%$ gold
✓

Answer

Correct option: C.
$75\%$ gold
Caratage is the measurement of purity of gold alloyed with other metals. $24$ carat is pure gold with no other metals. Low caratages contain less gold. $18$ carat gold contain $75\%$ of gold $25\%$ of other metals often, Copper/ Silk.

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