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Which of the following statments is/are correct?
- a)Bacteria do not survive in salted pickles because they get plasmolysed in hypertonic medium.
- b)Osmotic potential is numerically equal ot the osmotic pressure but is negative in sigh.
- c)Kneading of wheat flour is accompanied by release of heat which is due to imbibition.
- d)All of these.
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Which of the following statments is/are correct?a)Bacteria do not surv...
Following are the correct statements:
(1) Bacteria do not survive in salted pickles because they get plasmolysed in hypertonic medium.
(2) Osmotic potential is numerically equal to the osmotic pressure but is negative in sign.
(3) Kneading of wheat flour is accompanied by the release of heat which is due to imbibition.
So, the correct answer is (d).
(1) Bacteria do not survive in salted pickles because they get plasmolysed in hypertonic medium.
(2) Osmotic potential is numerically equal to the osmotic pressure but is negative in sign.
(3) Kneading of wheat flour is accompanied by the release of heat which is due to imbibition.
So, the correct answer is (d).
Most Upvoted Answer
Which of the following statments is/are correct?a)Bacteria do not surv...
Explanation:
a) Salted pickles have high salt concentration which makes the medium hypertonic. This causes water to move out of the bacterial cells, leading to plasmolysis and death of bacteria. Hence, the statement is correct.
b) Osmotic potential is defined as the amount by which the free energy of a system would change if a certain amount of solute were added, while osmotic pressure is the pressure required to prevent the movement of water across a semipermeable membrane due to osmosis. Osmotic potential is numerically equal to the osmotic pressure but is negative in sign. Hence, the statement is correct.
c) Kneading of wheat flour involves the addition of water to the flour. This leads to imbibition, which is the uptake of water by the flour particles. The imbibition process is exothermic, i.e., it releases heat. Hence, the statement is correct.
d) As all the given statements (a, b, c) are correct, option 'D' is the correct answer.
a) Salted pickles have high salt concentration which makes the medium hypertonic. This causes water to move out of the bacterial cells, leading to plasmolysis and death of bacteria. Hence, the statement is correct.
b) Osmotic potential is defined as the amount by which the free energy of a system would change if a certain amount of solute were added, while osmotic pressure is the pressure required to prevent the movement of water across a semipermeable membrane due to osmosis. Osmotic potential is numerically equal to the osmotic pressure but is negative in sign. Hence, the statement is correct.
c) Kneading of wheat flour involves the addition of water to the flour. This leads to imbibition, which is the uptake of water by the flour particles. The imbibition process is exothermic, i.e., it releases heat. Hence, the statement is correct.
d) As all the given statements (a, b, c) are correct, option 'D' is the correct answer.
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Which of the following statments is/are correct?a)Bacteria do not survive in salted pickles because they get plasmolysed in hypertonic medium.b)Osmotic potential is numerically equal ot the osmotic pressure but is negative in sigh.c)Kneading of wheat flour is accompanied by release of heat which is due to imbibition.d)All of these.Correct answer is option 'D'. Can you explain this answer?
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