Question

Why alloys are always considered as mixtures?

• A. They have a fixed composition
• B. They show the properties of their constituents.
• C. They can be separated into its constituents by physical method
• D. All of the above

Answer 1

The correct option is B

They show the properties of their constituents.

The explanation for correct option

(B)They show the properties of their constituents

Alloys

• An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal.
• Properties of metals can be enhanced by the addition of certain metals or elements.
• They can not be separated into their constituents by physical method.
• It is considered a mixture because it shows the property of its constituents and can have variable composition.

Example

• Brass is an alloy of $66\%$copper and $34\%$ zinc.

The explanation for incorrect option

• It is considered a mixture because the alloy shows the properties of its constituents.
• Hence, options (A), (C), and (D) are incorrect.

Hence, the correct option is (B). Alloys show the properties of their constituents.