How can you find out your pulse rate ?

How can you find the virus?

The base of a cylinder is a circle with radius r. How can you find the area of the base? How can you use this in your formula for the volume of a cylinder?

How can you find out the respiration in plants by an experiment?

When do you think that our pulse rate goes up?

How can you feel your ribs ?

How can you find out whether a given amine is a primary amine ? Write the chemical reaction involved in the test you perform.

How can you find the age of fossiles ?

How can you get your own distilled water in laboratory?

How can you maintain your heart healthy? Write in brief.