Question

Assertion (A) : The movement of the solvent molecule from a solution of higher concentration to a solution of lower concentration through a semi- permeable membrane is known as osmosis.
Reason (R) : This is generally applicable for the movement of gaseous substances.

Answer 1

$\huge\mathcal \fcolorbox{red}{silver}{Both\:Assertion\:and\:reason\:are\:true}$

Osmosis is the spontaneous net movement or diffusion of solvent molecules through a selectively permeable membrane from a region of high water potential to a region of low water potential, in the direction that tends to equalize the solute concentrations on the two sides.

Answer 2

c) Assertion is true but Reason is false.

Osmosis is termed as the movement of solvent molecules from a region of higher concentration of solute to a region of lower concentration through a semi-permeable membrane. It plays an important role in both plant and animal cells for release of of excess water, exchange of gases, nutrients, waste matter etc. This confirms that the assertion is true.

Osmosis is generally applicable for the movement of liquid substances, especially water and not gaseous substances. Therefore the reason is false.

From this, we can infer that the assertion is true but the reason is false.