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प्रश्न
Define the cohesive force.
Define the term cohesive force.
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उत्तर
The intermolecular force of attraction between two molecules of the same material is called the cohesive force.
Example: The force of attraction between two water molecules.
संबंधित प्रश्न
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The shrinkage of protoplasm, when a cell is kept in hypotonic solution.
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Distinguish between the following:
Turgor pressure and osmotic pressure
Name the following:
The pressure with which the molecules of a substance diffuse.
A leaf cell of a water plant was placed in a liquid other than pond water. After sometime, it assumed a shape as shown below:
Redraw in the space provided, the diagram of the cell if it is soon placed in ordinary water for some time.
Give Reasons for the following.
We gargle with saline water in case of throat infection.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
Fill in the Blanks
Diffusion is the movement of molecules from a region of their ________ concentration to the region of their ________ concentration.
Explain the term:
Diffusion
