Do you feel any sensation on your skin?

Choose a quiet corner and keep still physically and mentally for about five minutes. Do you feel any change in your state of mind?

Can you feel a swollen region inside your upper arm?

You might have touched soap water or lime water. How do you feel ? What is your conclusion?

What did you feel on your finger when your friend exhaled ?

Why does rubbing of isopropyl alcohol give a cooling sensation to the skin?

Why does rubbing isopropyl alcohol give a cooling sensation to the skin?

Do you observe any soil pollution in your neighbourhood? What efforts will you make for controlling the soil pollution?