Question

Brass is an Alloy of ______________ and ______________ metals which shows significant ductility.
(A) $ \text{Cu} $ and $ \text{Zn} $
(B) $ \text{Pb} $ and $ \text{Sn} $
(C) $ \text{Zn} $ and $ \text{Pb} $
(D) $ \text{Sn} $ and $ \text{Cu} $

Answer 1

Hint: An alloy is a homogenous mixture of two or more than two metals and some non-metals as well. The property of the alloy is totally different from the metals that make it up. Brass contains two d-block elements of the 4th period.

Complete Step by Step Answer
Brass is an alloy of copper and zinc, in which the proportions of metals can be varied to achieve different mechanical and electrical properties. It is a substitution alloy that consists of atoms that can replace each other in the crystal. Bronze is similar to brass, another alloy that uses tin in place of zinc. Both these alloys may include elements that include arsenic, lead, phosphorus, aluminium, manganese, and silicon.
Brass has been popularly used for its bright gold-like appearance, such as in drawer pulls and door knobs. It has also been used for all sorts of utensils due to many properties such as low melting point, workability, durability, electrical and thermal conductivity.
It is still commonly used in applications where low friction and corrosion resistance is required, Such as locks, hinges, gears, bearings, ammunition casings, zippers, plumbing, hose couplings, valves, and different costume and fashion jewelleries.
So the correct answer is option A, Copper and Zinc.

Note
Brass is much more malleable than copper and zinc and the low melting point of brass and its easy flow properties makes it an easy material to cast. By changing the proportions of copper and zinc, the properties of brass can be changed, allowing hard and soft brasses.