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From the given following (A to D) cyclic structures, those which will not react with Tollen’s reagent are:

Match the List-I with List-II

List-I Name of amino acid	List-II One letter symbol/type
A. Arginine	I. D/Non-essential
B. Aspartic acid	II. R/Essential
C. Lysine	III. E/Non-essential
D. Glutamic acid	IV. K/Essential

Choose the correct answer from the options given below:

Given below are two statements:

Statement I: The structure of Maltose is given below:

Statement II: The structure of Lactose is given below:

In the light of the above statements, choose the correct answer from the options given below:

Which of the following amino acid will give violet coloured complex with neutral ferric chloride solution?

The correct statements are:
A. Activation energy for enzyme catalysed hydrolysis of sucrose is lower than that of acid catalysed hydrolysis.
B. During denaturation, secondary and tertiary structures of a protein are destroyed but primary structure remains intact.
C. Nucleotides are joined together by glycosidic linkage between \( \mathrm{C_1} \) and \( \mathrm{C_4} \) carbons of the pentose sugar.
D. Quaternary structure of proteins represents overall folding of the polypeptide chain.
Choose the correct answer from the options given below:

Identify the correct statements.
A. Glucose exists in two anomeric forms.
B. Anomers of glucose differ in configuration at \( \mathrm{C\!-\!1} \) in cyclic hemiacetal structure.
C. Melting point of \( \alpha \)-anomer of glucose is greater than \( \beta \)-anomer.
D. Specific rotation of \( \alpha \)-anomer is \( +19^\circ \) while for \( \beta \)-anomer is \( +112^\circ \).
E. \( \alpha \) and \( \beta \)-anomers of glucose are prepared by crystallization of saturated glucose solution at \( 303 \, \mathrm{K} \) and \( 371 \, \mathrm{K} \) respectively.
Choose the correct answer from the options given below:

In the given pentapeptide, find out an essential amino acid \((Y)\) and the sequence present in the pentapeptide:

Choose the correct answer from the options given below:

The number of possible tripeptides formed involving alanine (ala), glycine (gly) and valine (val), where no amino acid has been used more than once is:

The incorrect statement from the following with respect to carbohydrates is:

10.

Identify the correct statements.
A. Arginine and Tryptophan are essential amino acids.
B. Histidine does not contain heterocyclic ring in its structure.
C. Proline is a six membered cyclic ring amino acid.
D. Glycine does not have chiral centre.
E. Cysteine has characteristic feature of side chain as MeS – \( \mathrm{CH_2} \) – \( \mathrm{CH_2} \) –.
Choose the correct answer from the options given below:

11.

Match the LIST-I with LIST-II.

Choose the correct answer from the options given below:

12.

Match List-I with List-II.

List-I Vitamin	List-II Name
A. Vitamin B1	I. Pyridoxine
B. Vitamin B2	II. Ascorbic acid
C. Vitamin B6	III. Thiamine
D. Vitamin C	IV. Riboflavin

Choose the correct answer from the options given below:

13.

Both human DNA and RNA are chiral molecules. The chirality in DNA and RNA arises due to the presence of

14.

Given below are two statements:

Statement I: Sucrose is dextrorotatory. However, sucrose upon hydrolysis gives a solution having mixture of products. This solution shows laevorotation.

Statement II: Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose, the resulting solution becomes laevorotatory.

In the light of the above statements, choose the correct answer from the options given below:

15.

Match the LIST-I with LIST-II.

List-I Deficiency Disease	List-II Vitamin
A. Scurvy	I. Pyridoxine
B Convulsions	II. Vitamin A
C Cheilosis	III. Ascorbic Acid
D Xerophthalmia	IV. Riboflavin

Choose the correct answer from the options given below:

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JEE MAIN 2026 28TH Jan Morning Shift

In the given pentapeptide, find out an essential amino acid \((Y)\) and the sequence present in the pentapeptide:

Choose the correct answer from the options given below:

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JEE Mains JEE Advance BITSAT
JEE Mains | PYQ