Advertisements
Advertisements
प्रश्न
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A and B), the container A having water and the other (B) containing concentrated sugar solution. After 24 hours when the cubes were examined, those placed in water were found to be firm and had increased slightly in size and those placed in concentrated sugar solution were found to be soft and somewhat decreased in size. Use the above information to answer the questions that follow:
Name and define the physical process being investigated in this experiment.
Advertisements
उत्तर
The process being investigated is osmosis. Osmosis is the diffusion of water molecules across a semi-permeable membrane from a more dilute solution (with a lower solute concentration) to a less dilute solution (with a higher solute concentration).
संबंधित प्रश्न
The highest water potential (capacity to move out higher concentrated solution) is that of ______.
Give reason for the following:
Potato cubes, when placed in water, become firm and increase in size.
Name the following:
The pressure with which the molecules of a substance diffuse.
Explain why:
We gargle with saline solution in case of throat infection.
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
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:
Comment on the nature (tonicity) of the liquid surrounding the cell.
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Name the two organelles in a plant cell that contain their own genetic material and ribosomes.
The given statement is incorrect. Rewrite the correct statement:
Fresh water fish when placed in hypertonic salt solution absorb water and burst.
