Question

Choose the word which is least like the other words in the group
1.copper
2.zinc
3.brass
4.iron

Answer 1

$\huge\underline\mathtt{Answer:-}$

$\huge\boxed{Brass}$

Reason:-

Brass is an alloy of copper and zinc.

Others are all metals.

What are alloys?

Alloys are the homogeneous mixtures of two or more metals or a metal and a non metal.

Examples of other alloys:-

Solder

Bronze

Stainless steel

Answer 2

Answer: The correct answer is Option 3.

Explanation:

Metals are defined as the elements which loose electrons to attain stability. For Example: Sodium, Copper etc...

Alloys are defined as the substances which are formed by the chemical combination of two or more metals in a fixed ratio by their mass. These are homoegeneous mixtures because the components remain consistent. For Example: Steel, Bronze, brass etc..

Copper, Zinc and Iron are considered as metals because they loose electrons to attain stability.

Brass is an alloy having 67 % copper and 33 % zinc content in it.

Hence, the correct answer is Option 3.