Statement- Reverse osmosis is used to purify saline water.
Explanation- Solvent molecules pass from concentrate solution to dilute solution through semipermeable membrane if high pressure is applied on solution side.
Statement- Reverse osmosis is used to purify saline water.
Explanation- Solvent molecules pass from concentrate solution to dilute solution through semipermeable membrane if high pressure is applied on solution side.
Explanation- Solvent molecules pass from concentrate solution to dilute solution through semipermeable membrane if high pressure is applied on solution side.
A
If both the statements are TURE and STATEMENT-2 is the correct explanation STATEMENT-1
B
If both the statements are TURE but STATEMENT-2 is NOT the correct explanation STATEMENT-1
C
If STATEMENT-1 is TURE and STATEMENT-2 is FALSE
D
If STATEMENT-1 is FA,SE and STATEMENT-2 is TRUE
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B
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The two solutions A and B are separated by semipermeable membrane. If the solvent flows from A to B :
What will happen if pressure greater than osmotic pressure is applied on the solution separated by a semipermeable membrane from the solvent?
These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:In osmosis solvent moves through a semipermeable membrane from a place of lower diffusion pressure a place of higher diffusion pressure. Reason:It is due to migration of solvent from hypertonic solution to hypotonic solution through a semipermeter membrane.
Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer accoring to the instrution given below: STATEMENT - 1 : Osmotic involves movement of solvent molecules from lower concentration to higher concentration. STATEMENT - 2 : Solutions having the same osmotic pressure are called isotonic solutions.
A semipermeable membrane used in the measurement of osmotic pressure of a solution allows the passage of
Equal mass of a soute are dissolved in equal mass of two solvents A and B and formed very dilute solution. The relative lowering of vapour pressure for the solution B has twice the relative lowering of vapour pressure for the solution A. If m_(A) "and" M_(B) are the molecules mass of solventds A and B respectively, then :
Lowering in vapour pressure is determined by Ostwald and Walker dynamic methed. It is based on the prinicipal , that when air is allowed to pass through a solvent or solution, it takes up solventvapour with it to get itself saturated at that temperature I and II are weighted separately before and after passing dry air. Loss in mass of each set, gives the lowing of vapour pressure. The temperature of air, the solution and the solvent is kept constant. Dry air was passed thorough 9.24 g of solute in 108 g of water and then through pure water. The loss in mass of solution was 3.2 g and that of pure water 0.08 g . The molecular mass (g/mol) of solute is nearly :
Read the following passage and answer the questions. Ultrafiltration is the process of separating the colloidal particles from the solvent and soluble solutes present in the colloidal solution by specially prepared filters, which are permeable to all substances except the colloidal particles. Colloidal particles can pass through ordinary filter paper because the pores are too large. However, the pores of filter paper can be reduced in size by impregnating with collodion solution to stop the flow of colloidal particles. The usual collodion is a 4% solution of nitrocellulose in a mixture of alcohol and ether. An ultra-filter paper may be prepared by soaking the filter paper in a collodion solution, hardening by formaldehyde and then finally drying it. Thus, by using ultra-filter paper, the colloidal particles are separated from rest of the materials. Ultrafiltration is a slow process. To speed up the process, pressure or suction is applied. The colloidal particles left on the ultra-filter paper are then stirred with fresh dispersion medium (solvent) to get a pure colloidal solution. What is collodion ?
Read the following passage and answer the questions. Ultrafiltration is the process of separating the colloidal particles from the solvent and soluble solutes present in the colloidal solution by specially prepared filters, which are permeable to all substances except the colloidal particles. Colloidal particles can pass through ordinary filter paper because the pores are too large. However, the pores of filter paper can be reduced in size by impregnating with collodion solution to stop the flow of colloidal particles. The usual collodion is a 4% solution of nitrocellulose in a mixture of alcohol and ether. An ultra-filter paper may be prepared by soaking the filter paper in a collodion solution, hardening by formaldehyde and then finally drying it. Thus, by using ultra-filter paper, the colloidal particles are separated from rest of the materials. Ultrafiltration is a slow process. To speed up the process, pressure or suction is applied. The colloidal particles left on the ultra-filter paper are then stirred with fresh dispersion medium (solvent) to get a pure colloidal solution. What is ultrafiltration ?
select the correct statement (s) : A sol is prepared by addition of excess of AgNO_(3) solution in Kl solution . The charge likely to develop on colloidal particle is positive, the effects o pressure on physical adsorption is high if temperature is low, Ultracentrifugation process is used for preparation of colloids, Gold number is the index for extent of gold plating done.