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The correct representation in six membered pyranose form for the following sugar \([X]\) is

Sugar \([X]\):

A short peptide on complete hydrolysis produces \( 3 \) moles of glycine \( (\mathrm{G}) \), two moles of leucine \( (\mathrm{L}) \) and two moles of valine \( (\mathrm{V}) \) per mole of peptide. The number of peptide linkages in it are ______.

A protein ‘X’ with molecular weight of \( 70{,}000 \, \mathrm{u} \), on hydrolysis gives amino acids. One of these amino acid is:

Which is not true for arginine?

Following tetrapeptide can be represented as:

(F, L D, Y, I, Q, P are one letter codes for amino acids)

Number of compounds from the following which will not produce orange red precipitate with Benedict solution is ________.
Glucose, maltose, sucrose, ribose, \( 2 \)-deoxyribose, amylose, lactose

Sulphur \( (\mathrm{S}) \) containing amino acids from the following are:
(a) isoleucine (b) cysteine (c) lysine (d) methionine (e) glutamic acid

All structures given below are of vitamin C. Most stable of them is:

Match items of Row I with those of Row II.
Row I:

Row II :
(i) \(\alpha\) − D − (−) − Fructofuranose, (ii) β − D − (−) − Fructofuranose,
(iii) \(\alpha\) − D − (−) Glucopyranose, (iv) β − D − (−) − Glucopyranose
Correct match is:

10.

The one that does not stabilize \( 2^\circ \) and \( 3^\circ \) structures of proteins is:

11.

Match List I and List II

Choose the correct answer from the options given below:

12.

L-isomer of tetrose \( X(\mathrm{C_4H_8O_4}) \) gives positive Schiff’s test and has two chiral carbons. On acetylation, ‘X’ yields triacetate. ‘X’ also undergoes following reactions
\(\text{'A'} \xleftarrow{\text{HNO}_3} \text{'X'} \xrightarrow{\text{NaBH}_4} \text{'B' (Chiral compound)}\)
‘X’ is:

13.

In Carius tube, an organic compound ‘\( X \)’ is treated with sodium peroxide to form a mineral acid ‘\( Y \)’. The solution of \( \mathrm{BaCl_2} \) is added to ‘\( Y \)’ to form a precipitate ‘\( Z \)’. ‘\( Z \)’ is used for the quantitative estimation of an extra element. ‘\( X \)’ could be:

14.

The naturally occurring amino acid that contains only one basic functional group in its chemical structure is:

15.

Match List I with List II

LIST I (Vitamin)	LIST II (Deficiency disease)
A. Vitamin A	I. Beri-Beri
B. Thiamine	II. Cheilosis
C. Ascorbic acid	III. Xerophthalmia
D. Riboflavin	IV. Scurvy

Choose the correct answer from the options given below:

16.

Uracil is a base present in RNA with the following structure. \( \% \) of \( \mathrm{N} \) in uracil is \( \_\_\_\_\_ \).

Given:
Molar mass \( \mathrm{N} = 14 \, \mathrm{g\,mol^{-1}} \)
\( \mathrm{O} = 16 \, \mathrm{g\,mol^{-1}} \)
\( \mathrm{C} = 12 \, \mathrm{g\,mol^{-1}} \)
\( \mathrm{H} = 1 \, \mathrm{g\,mol^{-1}} \)

17.

Total number of tripeptides possible by mixing of valine and proline is ________ .

18.

Match List I with List II:

List I	List II
Natural Amino Acid	One Letter Code
(A) Arginine	(I) D
(B) Aspartic acid	(II) N
(C) Asparagine	(III) A
(D) Alanine	(IV) R

Choose the correct answer from the options given below:

19.

Given below are two statements : one is labelled as Assertion (A) and the other labelled as Reason (R).
Assertion (A) : Ketoses gives Seliwanoff’s test faster than Alsoses.
Reason (R) : Ketoses undergoes \( \beta \) - elimination followed by formation of furfural.
In the light of the above statements, choose the correct from the options given below:

20.

Number of cyclic tripeptides formed with \( 2 \) amino acids \( A \) and \( B \) is:

21.

In an oligopeptide named Alanyl Glycyl Phenyl Alanyl Isoleucine, the number of \( \mathrm{sp^2} \) hybridized carbons is _____.

22.

Match List I with List II.

List I	List II
Natural amino acid	One letter code
A Glutamic aid	I Q
B Glutamine	II W
C Tyrosine	III E
D Tryptophan	IV Y

Choose the correct answer from the options given below:

23.

Match List I with List II:

Choose the correct answer from the options given below:

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JEE Main 2023 1st Feb Evening Shift

All structures given below are of vitamin C. Most stable of them is:

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