A living cell contains a solution which is isotonic with $0.3 M$ sugar solution. What osmotic pressure develops when the cell is placed in a $0.1 M KCl$ solution at body temperature?

5.0 atm

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2.54 atm

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4.92 atm

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2.46 atm

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Solution

The correct option is B $2.54 atm$
Osmotic pressure for a solution is given by
$π = i c R T$
$π = (i_{1} C_{1} - i_{2} C_{2}) R T$
$= 2.54$ atm.

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A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?

(a) Isotonic sugar solution (b) Hypotonic salt solution

	Column I		Column II
$(i)$	Saturated solution	$(a)$	Solution having the same osmotic pressure at a given temperature as that of the given solution.
$(i i)$	Binary solution	$(b)$	A solution whose osmotic pressure is less than that of another.
$(i i i)$	Isotonic solution	$(c)$	Solution with two components
$(i v)$	Hypotonic solution	$(d)$	A solution which contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.
$(v)$	Solid Solution	$(e)$	A solution whose osmotic pressure is more than another.
$(v i)$	Hypertonic Solution	$(f)$	A solution in the solid phase

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