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CBSE Class 12-science Answered

Sir i wanted to know why people taking lot of salty food experience water retention? What happens to the blood cells in this case?Do they shrink or swell and why?
Asked by DIVYA GARG | 08 Jan, 2014, 10:12: AM
answered-by-expert Expert Answer
  • When the red blood cells are kept in a concentration saline solution, the water will come out of the caells and the cell will shrink.
  • This is because the concentration of the solution outside the cells is higher than inside the cells.
  • Hence due to osmosis, water comes out of the cell to maintain equilibrium in the cocentrations of the solutions between both inside and outside of the cells.
Answered by Prachi Sawant | 08 Jan, 2014, 10:42: AM

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CBSE 12-science - Chemistry
The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.
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CBSE 12-science - Chemistry
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CBSE 12-science - Chemistry
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CBSE 12-science - Chemistry
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CBSE 12-science - Chemistry
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CBSE 12-science - Chemistry
5g of NaOH is dissolved in 500ml of water. find the molarity of the solution
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Asked by saritanohar22 | 13 Jan, 2024, 01:25: PM
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CBSE 12-science - Chemistry
A 10% solution of urea ( molar mass 60) is found to be isotonic with a 5% solution of an unknown non-electrolyte substance.The molecular mass of unknown substance is (a) 40% (b) 50% (c) 45% (d) 30%
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Asked by kaushikmisty07 | 31 Dec, 2023, 11:42: AM
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CBSE 12-science - Chemistry
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CBSE 12-science - Chemistry
The boiling point of benzene is 353.23k. When 1.80g of a non-volatile solute was dissolved in 90g of benzene , the boiling is raised to 345.11k. Calculate the molar mass of solute (kb=2.53kg mol-1)
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