Question

Match the following:

$$\begin{array}{cccc}\text{(i)}& \text{Water}& \text{(A)}& \text{Compound}\\ \text{(ii)}& \text{Hydrogen}& \text{(B)}& \text{Element}\\ \text{(iii)}& \text{Salt}& & \\ \text{(iv)}& \text{Gold}& & \\ \text{(v)}& \text{Carbon dioxide}& & \\ \text{(vi)}& \text{Iron}& & \end{array}$$
The correct pairs are:-

• A. (i, iii, iv) – A, (ii, v, vi) - B
• B. (i, iii, v) – A, (ii, iv, vi) - B
• C. (i, ii, v) – A, (iii, iv, vi) - B
• D. (i, ii, iii) – A, (iv, v, vi) - B

Answer 1

The correct option is B

(i, iii, v) – A, (ii, iv, vi) - B

Element is defined as the basic fom of matter that cannot be broken down into simpler substances by chemical reactions.
Hydrogen, gold and iron are examples of elements.
A compound is a substance composed of two or more elements.They are chemically combined in fixed proportion.
Water ($H_{2}O$ ) is composed of hydrogen and oxygen. Therefore, it is a compound.
Salt $NaCl$ is composed of sodium and chlorine. Therefore it is a compound.
Carbon dioxide $C{O}_2$ is a compound composed of carbon and oxygen.