Question

Assertion – Osmosis is movement of water from its higher concentration to the area of lower concentration.

Reason – A semipermeable membrane is seldom required for it.

Answer 1

1. Movement of water from its higher concentration to its lower concentration via a semi permeable membrane is called osmosis.
2. It take place only in liquid medium. Solvent alone undergo diffusion across the semi permeable membrane.
3. Rate of osmosis depends upon the concentration and type of solutes.
4. There are three type of osmotic solutions:

1. Hypotonic solution – a dilute solution with low osmotic concentration compared to another solution.
2. Hypertonic solution – a concentrated solution with high osmotic concentration compared to other solutions.
3. Isotonic solution —same osmotic concentration as that of another solution.

Assertion is true but reason is false.