Question

Swelling of any raisins indicate that:

(a) external solution is hypotonic (b) skin of raisins is impermeable (c) external solution is hypertonic (d) external solution is isotonic

It's from class XIII.

Answer 1

SWELLING OF THE RAISINS INDICATE THAT THE EXTERNAL SOLN IS HYPOTONIC ..AS THE OUTER SOLN IS HYPOTONIC.THE CONC. OF SOLUTE IS LESS AND THE CONC OF WATER IS MORE.SO THE SOLVENT WATER MOVES FROM THE SOLN TO THE RAISINS THROUGH A SEMI PERMEABLE MEMBRANE

Answer 2

Explanation:

External solution is hypertonic