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Q.

Brass contains:


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a

Cooper and silver 

b

Copper and zinc

c

Gold and copper

d

Zinc and silver

answer is B.

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Detailed Solution

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Brass contains copper and zinc.
Homogeneous and heterogeneous are two classes in which mixtures are classified. Homogeneous mixtures are a true solution having sizes of particles less than 1nm due to which they cannot be separated easily. Suspension and colloids are examples of heterogeneous mixtures. Brass is an alloy and it contains copper and zinc. Alloy is a homogeneous mixture of metals or non-metals.
 
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