Question

Match the following:

$$\begin{array}{cccc}\left(\text{i}\right)& \text{Water}& \left(\text{A}\right)& \text{Compound}\\ \left(\text{ii}\right)& \text{Hydrogen}& \left(\text{B}\right)& \text{Element}\\ \left(\text{iii}\right)& \text{Salt}& & \\ \left(\text{iv}\right)& \text{Gold}& & \\ \left(\text{v}\right)& \text{Carbon dioxide}& & \\ \left(\text{vi}\right)& \text{Iron}& & \end{array}$$
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

Water ($H_{2}O$ ) is composed of hydrogen and oxygen. Therefore, it is a compound.

Hydrogen is an element.

Salt (NaCl) is composed of sodium and chlorine. Therefore it is a compound.

Gold is an element.

Carbon dioxide is composed of carbon and oxygen. Therefore, it is a compound.

Iron is an element.