Question

Which of the following alloys contain(s) Cu and Zn?
A.Bronze
B.Brass
C.GunMetal
D.Type Metal

Answer 1

An alloy is a combination of two or more metals that are combined together by melting the metals and this is done to get a finished product whose properties are different from the pure metals and are better than the pure metal.

Complete answer:
Among the above alloys, bronze is made up of copper, commonly with about $12-12.5$ tin and often with the addition of other metals such as aluminium, nickel, manganese, or zinc. Brass is an alloy of copper and zinc, in proportions that can be varied to achieve different mechanical and electrical properties. Gun metal consists of copper, tin, and zinc with the major proportion being that of copper (88%), tin (8-10%), and zinc (2-4%) approximately. Type metal is an alloy of tin, lead, and antimony, and is used for casting type.

Hence, it can be seen that among the given alloys, Brass is an alloy of copper and zinc, and the correct option is B.

Note:
Brass has an appearance like gold and it has been used for different applications such as utensils, due to properties such as low melting point, workability, durability, electrical and thermal conductivity. It is commonly used in applications where low friction and corrosion resistance is required such as locks, hinges, gears, bearings, ammunition casings, zippers, plumbing, valves, electrical sockets and plugs. It is also used as a substitute for copper in jewellery making in place of copper.