Structure of the Atom — Science STD 9 — Question

Give one main function of collenchyma?

Name two processes which provide the best evidence for the motion of particles in matter.

Which of the following contains less solute at a given temperature and pressure?
Unsaturated solution or Saturated solution.

Under what conditions can a body travel a certain distance and yet its resultant displacement be zero?

Name the process which is used in milk dairies to separate cream from milk.

Name the force which makes heavy objects appear light when immersed in a liquid.

On the earth, a stone is thrown from a height in a direction parallel to the earth’s surface while another stone is simultaneously dropped from the same height. Which stone would reach the ground first and why?

Name the quantitity, the slope of whose graph gives:
Acceleration.

What kind of energy is possessedby the following?

A stone kept on roof-top.