State two benefit of inhalation through the nasal chambers than through mouth.

State two benefits of mitosis.

State two functions of nasal chambers?

Why are diffraction effects more prominent through a slit formed by two blades than through a slit formed by two fingers?

List two diseases that spread through droplets.

In a plane there are 37 straight lines, of which 13 passes through the point A and 11 passes through point B. Besides, no three lines passes through one point no line passes through both points A and B and no two are parallel, then find the number of points of intersection of the straight line.

The differences between the electrode potentials of two electrodes when no current is drawn through the cell is called……….

If (3, 3) is a vertex of a triangle and (- 3, 6) and (9,6) are the mid-points of the two sides through this vertex, then the centroid of the triangle is :

State true or false Circles drawn through a given point is one .