Question

An alloy bell metal consists of
A. Copper and zinc
B. Nickel and tin
C. Zinc and tin
D. Copper and tin

Answer 1

Hint:One of the metals present in the alloy of the bell is a very good conductor of electricity but not used commercially due to its high cost.
And another metal that is present in the alloy is a Group 14 element and is generally considered as a non-metal.

Complete step-by-step answer:*A combination of metal with at least one other metal or non-metal is called an alloy. One of the most common ways to combine metals into an alloy is by melting them, mixing them and then allowing it to cool to room temperature for solidifying it. Common alloying metals are Copper,
*Chromium, Aluminium, Nickel, Tin, Lead etc.The alloy that is used in the preparation of bell is BRONZE.
*Bronze is an alloy of Copper (Cu) and Tin (Sn) (Ratio of Copper and Tin is 78:22 respectively by mass)
*Bell metal is a hard alloy for making bells and related instruments such as cymbals.
*Also, the higher content of Tin (Sn) increases the rigidity of the metal and increases the resonance.

Additional Information:
One of the reasons why metals are used for making alloys is because they are sonorous which means it produces a loud ringing sound when we strike them. Metals used for bells are specially combined metals that produce a striking ringing sound which is copper and tin.

Therefore, the bell metal is an alloy of Copper and Tin. Hence the correct option is D.

Note:Bronze alloy should not be confused with the Brass alloy. There is quite a lot of difference in their properties and usage. Brass is an alloy of copper and Zinc. It has low friction and acoustic properties which is why it is a popular metal to be used in musical instruments. It is also used as a decorative material.