Which of the following is an alloy?

Alloy is a homogeneous mixture of 2 or more metals or metal and non-metal. In this question we will get the solution by options.

•In option (A) silver is a metal not a mixture and option

•(B) gallium is also metal and option

•(D) 24 carat gold is the pure form of gold but option

•(C) 22 carat gold is an alloy which consists of 22 parts of gold and 2 parts of other metals such as copper or silver. So, the correct option is (C).