Advertisements
Advertisements
प्रश्न
Define the Cohesive and Adhesive forces.
Advertisements
उत्तर
Cohesive Force: The force produced by the molecular attraction between water particles.
Adhesive Force: The force of attraction between the molecules of unlike bodies that act to hold them together is called adhesive force.
APPEARS IN
संबंधित प्रश्न
The highest water potential (capacity to move out higher concentrated solution) is that of ______.
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
Addition of salt to pickles prevents growth of bacteria because they turn turgid.
Distinguish between the following:
Filtration and diffusion
Distinguish between the following:
Turgor pressure and osmotic pressure
Name the following:
The pressure with which the molecules of a substance diffuse.
Explain why:
The leaves of wilted lettuce, if kept in cold water, become crisp.
Give Reasons for the following.
Salt and sugar are used in preserving food.
In the figure below ‘A’ shows a cell in the normal state and ‘B’ shows the same cell after leaving it in a certain solution for a few minutes.

(i) Describe the change which has occurred in the cell as seen in B.
(ii) Give the technical term for the condition of the cell as reached in B and as it was in A.
(iii) Define the process which led to this condition.
(iv) What was the solution-isotonic, hypotonic or hypertonic, in which the cell was kept?
(v) How can the cell in B, be brought back to its original condition?
(vi) Name the parts numbered 1 to 3.
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Define the following term:
Tonicity
