Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Biomolecules question

2023 · 13 Apr · Shift 1 · Q12
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Biomolecules
  5. /2023 · 13 Apr · Shift 1 · Q12

Biomolecules question

2023 · 13 Apr · Shift 1 · Q12

JEE MainChemistryBiomoleculesMCQ+4 / −1
JEE Main 2023 (Online) 13th April Morning Shift Chemistry - Biomolecules Question 51 English The products formed in the above reaction are
  1. A
    Two optically active products
  2. B
    One optically active and one meso product
  3. C
    Two optically inactive products
  4. D
    One optically inactive and one meso product.
View written solutionFree

Correct answer: B

The question says “The products formed in the above reaction are”, but the actual reaction scheme/figure is missing from the prompt.

Because the reaction itself is not provided, the products cannot be determined uniquely from the text and options alone. In such stereochemistry questions, the answer depends completely on the specific substrate/reagent combination shown in the missing reaction.

What can still be said

The options are about the stereochemical nature of two products:

  1. Two optically active products
  2. One optically active and one meso product
  3. Two optically inactive products
  4. One optically inactive and one meso product

To choose among these, one must inspect:

  • whether new stereocentres are formed,
  • whether the products are enantiomers/diastereomers,
  • whether any product has an internal plane of symmetry (meso),
  • whether racemic mixtures are produced.

Without the missing reaction, this analysis cannot be done rigorously.

Comparison with stored answer

The stored correct answer is B: One optically active and one meso product.

Since the reaction image is absent, I cannot independently verify that choice from the given information alone. Therefore, I do not have enough data to derive the answer confidently.

PreviousNext

More from Biomolecules

  • The naturally occurring amino acid that contains only one basic functional group in its chemical structure is2023 · MCQ
  • Which is not true for arginine?2023 · MCQ
  • Uracil is a base present in RNA with the following structure. % of N in uracil is ​ Given: Molar mass N = 14 g mol −1 O = 16 g mol −1 C = 12 g mol −1 H = 1 g mol −1 Includes diagram2023 · Numerical
  • Total number of tripeptides possible by mixing of valine and proline is ​2023 · Numerical
  • Match items of Row I with those of Row II. Row I : Row II : (i) α-D-(−)-Fructofuranose(ii) β-D-(−)-Fructofuranose (iii) α-D-(−) Glucopyranose (iv) β-D-(−)-Glucopyranose Correct match… Includes diagram2023 · MCQ
  • Number of cyclic tripeptides formed with 2 amino acids A and B is :2023 · MCQ
  • Following tetrapeptide can be represented as (F, L, D, Y, I, Q, P are one letter codes for amino acids) Includes diagram2023 · MCQ
  • Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Ketoses give Seliwanoff's test faster than Aldoses. Reason (R) : Ketoses undergo β-elimination followed by…2023 · MCQ