What is the primary cause of tides on

What defines an ion?

Which of the following statement is correct?

I. The property of metals by which they can be beaten into thin sheets is called ductility.

What is the focal length of a double convex lens for which the radius of curvature of each surface is 30 cm and the refractive index of glass is 2.50 ?

How many chromosomes are present in a typical human cell?

Who discovered the cell for the first time?

Which of the following is/are true about ‘Villi’?

I. They are present in the walls of the small intestine.

A man inside an artificial satellite feels weightlessness because the force of attraction due to earth is –

Which disease is caused due to the deficiency of iodine?

What is the primary source of the Sun’s energy?

Which of the following are examples of macro minerals?