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Solution


Q.

An alloy is:
1 an element  
2 a compound  
3 a homogeneous mixture  
4 a heterogeneous mixture  

Ans.

(3)

Suspensions and colloids are heterogeneous mixtures, whereas an alloy is a homogeneous mixture of two or more metals. The properties of a metal can be improved by mixing it with another metal. metal such as melting point, electrical conductivity, resistant to corrosion and strong metals. Example of alloys are stainless steel (homogeneous mixture of Fe, Cr, Ni), brass (homogeneous mixture of Cu and Zn), bronze (homogeneous mixture of Cu and Sn) etc.