Question

Match the metals with their respective uses
$\begin{array}{cccc}& \text{Metal}& & \text{Uses of Metals}\\ \text{(p)}& Fe& 1)& \text{Bone building}\\ \text{(q)}& Na\text{and}K& 2)& \text{Photosynthesis}\\ \text{(r)}& Ca& 3)& \text{Haemoglobin}\\ \text{(s)}& Mg& 4)& \text{Control of Nervous system}\end{array}$

• A. $p-3,q-4,r-1,s-2$
• B. $p-1,q-4,r-3,s-2$
• C. $p-2,q-3,r-1,s-4$
• D. $p-3,q-1,r-2,s-4$

Answer 1

The correct option is A $p-3,q-4,r-1,s-2$

$Fe$ is the important constituent of haemoglobin.Haemoglobin is the carrier of oxygen in the body.

$Na$ and $K$ are used for making sodium pumps and potassium pumps which are responsible for neuro conduction.

$Ca$ is the main constituent of bones and teeth.

$Mg$ is very important for plants, $Mg$ is present in green colour pigment chlorophyll present in green plants which is responsible for absorption of sunlight to form energy or the food inside the plants.