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

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.