Which one of the following metals is mixed with gold to provide strength to the jewellery?
[amp_mcq option1=”Manganese” option2=”Mica” option3=”Aluminium” option4=”Copper” correct=”option4″]
This question was previously asked in
UPSC CISF-AC-EXE – 2022
– The caratage of gold indicates the proportion of pure gold in the alloy (e.g., 18K gold is 75% gold).