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When a bottle of scent or ammonia is ope...

When a bottle of scent or ammonia is opened in one corner of a room, it can be smelled at the farthest corner after sometime due to the process of diffusion . At this stage , an equilibrium is reached due to the same concentration in space . At this point .

A

the movement of particles stops

B

the movement of particles continues

C

the movement of particles becomes very fast

D

none of the above .

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The correct Answer is:
B
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If a system at equilibrium is subjected to a change of any one of the factors such as concentration , pressure or temperature, the system adjusts itself in such a way so as to minimise the effect of that change. Effect of change in concentration on equilibrium: As we add or remove reactant (or product) the ratio of equilibrium concentratio become 'Q' (reaction quotient) and depending upon. QltK : equilibrium will shift ihn forward direction QgtK equilibrium will shift in backward direction Effect of change in pressure : If a system in equilibrium consists of gases, then the concentrations of all the components can be altered by changing the pressure. When the pressure on the system is increased, then equilibrium will shift in the direction in which there is decrease in number of moles i.e., towards the direction in which there is decrease in volume. Effect of change in pressure on melting point : There are two rypes of solids : Solids whose volume decreases on melting, e.g., ice, diamond, carborundum, magnesium nitride and quartz. Solid (higher volume) hArr Liquid (higher volume) The process of melting is facillitated at high pressure, thus melting point is lowered. Solid whose volume increase on melting, e.g., Fe, Cu, Ag, Au, etc. Solid (lower volume) hArr Liquid (higher volume) In this case the process of melring becomes difficult at high pressure, thuse melting point becomes high. Solubility of substances : When solid substance are dissolved in water, either heat is evolved. for endothermic solubility process solubility increase with increase in temperature. For exothemic solubility decrease with increase in temperature. Solubility of gases in liquids : when a gas dissolves in liquid, there is decreases in voolume. Thus increase of pressure will faavour the dissolution of gas in liquid. Effect of temperature : For endotherimic reacrtion as temperature increases reaction shift in backward direction Fe(l)hArrFe(s) Above equilibrium is favaured at :

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TRUEMAN BIOLOGY-TRANSPORT IN PLANTS-Multiple Choice Questions
  1. Maximum and minimum imbibing capacity is found in

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  2. The psi(W) of imbibants is

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  3. When a bottle of scent or ammonia is opened in one corner of a room, i...

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  4. The relative rates of diffusion of substances are

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  5. The rate of diffusion is dependent upon the permeability of the medium...

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  6. The translocation of substances inside a cell and over short distances...

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  7. The diffusion pressure of an individual substance during independent...

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  8. Selectively (differentially ) permeable membrane is that which allows

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  9. The membrane which allows only water molecules to pass through it and ...

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  10. The value of osmotic potential of an electolyte is always

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  11. The plasmalmma of the cell is a

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  12. The main difference in DPD and Psi(W) is

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  13. When a flaccid cell (e.g., grape raisine ) is placed in water

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  14. Which has maximum diffusion pressure ?

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  15. Which cell has maximum diffusion pressure deficit ?

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  16. Cell sap is

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  17. A cell placed in 0.5 M sugar solution was found to be with no change ...

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  18. When osmotic pressure becomes equal to the wall pressure, then

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  19. If a cell A with DPD=5 bars is connected to cells B,C and D whose OP a...

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  20. In this diagram , when the TP of cell B decreases to 10 , what would b...

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