Question

Alloy is not done for which of the following purposes?
a) To enhance the hardness of the metal
b) To enhance the tensile strength
c) To modify colour
d) To raise the melting point

Answer 1

We need to know that in chemistry, periodic tables play a vital role. Now we are using a modern periodic table. This modern periodic table consists of totally $118$ elements. In the periodic table there are totally $18$ columns and $7$ rows. The columns are called groups. Hence, $18$ groups in the periodic table. The rows are called periods. Hence, totally $7$ period in the table. In the world there are a lot of elements in various forms. For study and developing purposes, classification happens. Periodic table used to study the elements in easy form. If one new element is discovered, it means, based on the physical and chemical property we placed in the periodic table.

Complete answer:
As we know that the substance is made up of more than one metal is known as alloy. Alloy is mainly made to attain both properties of combined metals. Alloys are used to enhance the hardness of the metal, enhance the tensile strength of metal and modify the colour of metals.
Alloy is also made up of sometimes non-metals also.
But alloy is helpful for raising the melting point of the metals.
According to the above discussion, we conclude alloy is not done to raise the melting point.

Hence, option D is the correct answer.

Note:
In general we move left to right metallic properties of the atom decreases. We move right to left and non-metallic property decreases. In the modern periodic table metallic atoms are placed in the left side of the table and non-metallic atoms are placed in the right side of the table. Metalloids and transition elements are placed in between metal and non-metal elements. Below the two rows are there. There are nothing but lanthanides and actinides. These are f-block elements.