# Woorksheet on Osmotic pressure

The pressure which is applied to a solution to prevent the inward flow of water across a semipermeable membrane is known as Osmotic pressure. Pressure which is required to stop osmosis is called Osmotic pressure.

Questions:

1. Which of the following chemical entities can act as semipermeable membrane?

(a)    $Cu_2[Fe(CN)_6]$

(b)   $CaC_2O_4$

(c)    $Cu(SCN)_2$

(d)   None of these

2. 0.5 M aqueous solution of glucose is isotonic with:

(a)    0.5 M CaCl2 solution

(b)   0.5 M urea solution

(c)    0.5 M KCI solution

(d)   1 M solution of sucrose

3. For 0.5 M aqueous solution of certain electrolyte, the osmotic pressure:

(a)    increases with increase in temperature

(b)   decreases with increase in temperature

(c)    is independent of temperature

(d)   first increases and then decreases with increase in temperature

4. A plant cell shrinks when it is kept in:

(a)    hypertonic solution

(b)   hypotonic solution

(c)    water

(d)   isotonic solution with cell sap

5. A glucose solution to be injected into blood steam must have same as that of blood stream:

(a)    molarity

(b)   vapour pressure

(c)    viscosity

(d)   osmotic pressure

6. The temperature at which 10% aqueous solution of glucose will show osmotic pressure of 14 atm is:

(a)    34 K

(b)   $307^0C$

(c)    307.3 K

(d)   $34^0C$

7. 3% solution of glucose is isotonic with 1% solution of a non-volatile non-electrolyte substance. The molecular mass of the substance would be:

(a)    180

(b)   60

(c)    420

(d)   360