Explain the following phenomena:(i) Hemolysis(ii) Crena

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsLong Answer Type

111. Define vapour pressure of a liquid. What happens to the vapour pressure of a liquid when (a) a volatile solute dissolves in it and (b) a non-volatile solute dissolves in it?
194 Views

 Multiple Choice QuestionsShort Answer Type

112. What is osmotic pressure? How is it dependent on the number of moles of a solute?
137 Views

113. State Raoult’s law. If AT is the elevation of boiling point of a solvent and m is the number of moles of solute per kg of solvent, what is the realationship between T and m?
247 Views

114.

(a) What are non-ideal solution?
(b) What role does the molecular interaction play in deciding the vapour pressure of solutions (i) alcohol and kerosene (ii) Chloroform and acetone.

243 Views

Advertisement
115. Why do colligative properties of an electrolyte solution of a given concentration are found to be larger than those of a non-electrolyte solution of the same concentration?
184 Views

Advertisement

116. Explain the following phenomena:
(i) Hemolysis
(ii) Crenation.


Answer:

(i) Hemolysis: The red blood cells are protected from the external environment by a semipermeable membrane. The red blood cells are placed in a hypotonic solution. Because the hypotonic solution is less concentrated than the interior of the cell, water moves into the cell. The cell swells and eventually burst, releasing hemoglobin and other molecules. This process is called hemolysis.

(ii) Crenation: When a bacterial cell is placed in a hypertonic (high concentration) sugar solution, the intracellular water tends to move out of the bacterial cell to be more concentrated solution by osmosis. This causes the cell to shrink and eventually, to stop functioning. This process is called crenation.

208 Views

Advertisement
117. Why do we observe abnormal molecular masses?
247 Views

118. How does osmotic pressure depend on molality of the solution?
179 Views

Advertisement

 Multiple Choice QuestionsLong Answer Type

119. The molar mass of acetic acid determined from the measurement of a colligative property is greater than its formula molar mass. Explain why?
210 Views

 Multiple Choice QuestionsShort Answer Type

120. Explain why solvent-solvent, solute-solute and solute-solvent interactions are important in determining the extent to which a solute dissolves in a solvent.
165 Views

Advertisement