Can two streamlines cross each other in a flowing liquid?

Can two streamlins cross each other?

can two isothermal curves intersect each other ?

Define laminar flow of liquid?

What are various types of energies of a flowing liquid? Express them in terms of unit mass of the liquid.

Distinguish between streamline and turbulent flow of a liquid.

Gases are separated from each other by

If vecu and vecv be two vectors parallel to each other then find vecu xx vecv .

How can a colloidal solution and a true solution of the same colour can be distinguished from each other? What is analysis?

Both bryophytes and pteridophytes require water for fertilization, yet they differ from each other in many aspects. Bring out any two difference between them.