Assertion :In TCA cycle, isomerisation of citric acid into isocitric acid is done by change in CO $_{2}$ (COO $^{-}$ ) position. Reason: Isocitric acid is more stable than citric Acid.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
In TCA cycle or Krebs cycle, isomerization of citric acid into isocitric acid occurs due to the removal of one water molecule first and then an addition of another water molecule back which results in the conversion of citrate into its isomer, isocitrate. Hence, the assertion is incorrect.
Isocitrate is not stable than citrate as isocitrate loses a molecule of CO $_{2}$ and forms a five-carbon compound which gets oxidized. Hence, the reason is also incorrect.
So, the correct answer is 'Both Assertion and Reason are incorrect'.

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Similar questions

Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:

(a)

If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b)

If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c)

If assertion is true but reason is false.

(d)

If assertion is false but reason is true.
Assertion: 4-nitrophenol is more acidic than picric acid.
Reason: Phenol is a weaker acid than carbonic acid.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:

(a)

If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b)

If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c)

If assertion is true but reason is false.

(d)

If assertion is false but reason is true.
Assertion: 4-nitrophenol is more acidic than picric acid.
Reason: Phenol is a weaker acid than carbonic acid.

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Assertion :In TCA cycle, isomerisation of citric acid into isocitric acid is done by change in CO2 (COO−) position. Reason: Isocitric acid is more stable than citric Acid.

Assertion :In TCA cycle, isomerisation of citric acid into isocitric acid is done by change in CO $_{2}$ (COO $^{-}$ ) position. Reason: Isocitric acid is more stable than citric Acid.