When we go on a busy road, feel uneasy even when we close nose with a napkin.
If these symptoms will continue, what happens?

When we go on a busy road, feel uneasy even when we close nose with a napkin. Why these symptoms we observe?

When we go on a busy road in the evening a lot of smoke is spread in the surroundings. We get cough and feel uneasy even when we close the nose with napkins. Why this type of symptoms we observe? Think about it. If these symptoms will continue, what happens?

What does food give us? Why is it necessary when we sleep?

What happens when two atoms come close together ?

How does ionisation energy change when we go down in a group ?

When we go through deep forest, the following effect can be observed.

What happens to the image distance in the eye when we increase the distance of an object from the eye ?

When do we feel hunger pangs fall in stomach ?

Why don't we hear sounds when our ears are closed?

What happens when we keep an iron rod in open place for one or two days ?