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NEET CHEMISTRYBiomoleculesMedium

Question

D-(+)-glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be:

A
B
C
D

Step-by-Step Solution

D-(+)-glucose reacts with hydroxylamine (NH2OHNH_2OH) to form an oxime. The reaction involves the carbonyl group (aldehyde) at C-1 condensing with the −NH2-NH_2 group of hydroxylamine, eliminating a water molecule to form an oxime group (CH=NOHCH=NOH). The stereochemistry of the rest of the molecule (C-2 to C-6) remains unchanged.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Biomolecules. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYBiomoleculesdglucosereactshydroxylamineyieldsstructure

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$\alpha$-D-glucose and $\beta$-D-glucose are:

A.Epimers
B.Anomers
C.Functional isomers
D.Chain isomers
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Fructose reduces Tollen's reagent due to:

A.Primary alcoholic group
B.Secondary alcoholic group
C.Enolisation of fructose followed by conversion to aldehyde by base
D.Asymmetric carbon
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RNA and DNA are chiral molecules, their chirality is due to:

A.L-sugar component
B.chiral bases
C.chiral phosphate ester units
D.D-sugar component
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Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

A.Thyroxin
B.Insulin
C.Adrenaline
D.Estradiol
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Which one of the following sets of monosaccharides forms sucrose?

A.$\alpha$-D-galactopyranose and $\alpha$-D-glucopyranose
B.$\alpha$-D-glucopyranose and $\beta$-D-fructofuranose
C.$\beta$-D-glucopyranose and $\alpha$-D-fructofuranose
D.$\alpha$-D-glucopyranose and $\beta$-D-fructopyranose
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The incorrect statement about the denaturation of proteins is:

A.It results due to change of temperature and pH.
B.It results in the loss of biological activity of proteins.
C.A protein is formed from amino acids linked by peptide bonds.
D.Uncoiling of the helical structure takes place.
EasySolve

Which of the following is not a correct statement?

A.$\alpha$-carbon of $\alpha$-amino acid is asymmetric except for glycine.
B.Some proteins of human body are found in L-form.
C.The human body can synthesize all proteins it needs.
D.At $\text{pH} = 7$, both amino and carboxylic groups exist in ionized form.
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Match List-I with List-II: List-I (Vitamins) A. Vitamin K B. Vitamin $\text{B}_{12}$ C. Vitamin C D. Vitamin $\text{B}_1$ List-II (Deficiency/other name/ property) I. RBC deficient in haemoglobin II. Bleeding gums III. Thiamine IV. Fat soluble Choose the correct answer from the options given below:

A.A-I, B-II, C-III, D-IV
B.A-IV, B-III, C-II, D-I
C.A-I, B-IV, C-II, D-III
D.A-IV, B-I, C-II, D-III
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