Chemistry NCERT Exemplar Solutions Class 12th Chapter Fourteen

This is a Short Answer Type Questions as classified in NCERT Exemplar

In the above given structure, the hydroxyl group (−OH) present at the last chiral carbon atom of the molecule, that is, C5, is directed towards the left. As a result, the given compound has an ' L '- configuration.

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Monosaccharides contain carbonyl groups. As a result, they fall under the aldose or ketose categories. When an aldehyde group is present, the monosaccharides are known as aldose, and when a ketone group is present, the monosaccharides are known as ketose. Fructose is classified as ketohexose because it has six carbons and a keto group in its chemical formula (C6H12O6) 

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A glycosidic linkage is a linkage that connects monosaccharides in polysaccharides. The covalent bond that joins two or more monosaccharides to produce a polysaccharide is known as this linkage.

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The sugar moiety of a nucleoside is linked to a phosphoric acid unit, ideally at the 5? position, to form a nucleotide.

The structure is depicted in the diagram below.

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n-hexane is produced when glucose is cooked with HI for a lengthy amount of time. The reaction is depicted in the diagram below.

n-hexane has six carbon atoms joined in a straight chain because glucose has six carbon atoms.

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Lactose sugar is a naturally occurring sugar found in milk. D galactose and D glucose, two monosaccharide molecules, are linked together. As a result, disaccharides are the name given to these oligosaccharides.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Correct options are a and d.

Enzymes are protein molecules that operate as biocatalysts in the body, facilitating chemical processes. The pace of the reaction is accelerated by these catalysts.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Correct options are a and b.

Purines are made up of a six-membered nitrogen-containing ring joined with a five-membered nitrogen-containing ring.

Purine bases are guanine and adenine, while pyrimidine bases are thymine and uracil.

 

Hence (a) and (b) are correct choices for this question.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

Correct options are b and d.

Fibrous protein is generated when the polypeptide chain runs parallel and is held together by hydrogen and disulphide bonds.