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Question
Osmosis cannot be demonstrated by a potato osmoscope using a solution of NaCl instead of sugar; because the potato tissue is
Osmosis cannot be demonstrated by a potato osmoscope using a solution of NaCl instead of sugar; because the potato tissue is
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Solution
The correct option is C Permeable to salt solution
Osmosis is defined as movement of solvent or water from a region of its higher concentration to a region of its lower concentration through a semi permeable membrane. Thus, osmosis can be demonstrated with the help of a system, which is impermeable to salt solution and permeable to water only. In case a system is permeable to salts, also we cannot distinguish the movement of water from outside to inside with the movement of salts from inside to outside, if the outer medium is hypotonic. Similarly if the outer medium is hypertonic movement of salt or water cannot be explained unambiguously. The membrane of potato is impermeable to sugars. Hence, a sugar solution should be used in potato osmoscope.
Osmosis is defined as movement of solvent or water from a region of its higher concentration to a region of its lower concentration through a semi permeable membrane. Thus, osmosis can be demonstrated with the help of a system, which is impermeable to salt solution and permeable to water only. In case a system is permeable to salts, also we cannot distinguish the movement of water from outside to inside with the movement of salts from inside to outside, if the outer medium is hypotonic. Similarly if the outer medium is hypertonic movement of salt or water cannot be explained unambiguously. The membrane of potato is impermeable to sugars. Hence, a sugar solution should be used in potato osmoscope.
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