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Page 1 JEE Advanced Previous Year Questions (2021-2023): Biomolecules 2023 JEE Advanced 2023 Paper 2 Online Q1. A disaccharide ?? cannot be oxidised by bromine water. The acid hydrolysis of ?? leads to a laevorotatory solution. The disaccharide ?? is : A. B. C. D. Ans: (a) A and D cannot be oxidised by bromine water as they do not have hemiacetal linkage. Page 2 JEE Advanced Previous Year Questions (2021-2023): Biomolecules 2023 JEE Advanced 2023 Paper 2 Online Q1. A disaccharide ?? cannot be oxidised by bromine water. The acid hydrolysis of ?? leads to a laevorotatory solution. The disaccharide ?? is : A. B. C. D. Ans: (a) A and D cannot be oxidised by bromine water as they do not have hemiacetal linkage. The acid hydrolysis of A leads to a laevorotatory solution. A is sucrose which is dextrorotatory, on acid hydrolysis gives mixture of alpha-D-glucose and beta-D-fructose, the mixture is laevorotatory 2022 JEE Advanced 2022 Paper 2 Online Q1: Treatment of D-glucose with aqueous ?? ?? ?? ?? results in a mixture of monosaccharides, which are A. B. C. D. Page 3 JEE Advanced Previous Year Questions (2021-2023): Biomolecules 2023 JEE Advanced 2023 Paper 2 Online Q1. A disaccharide ?? cannot be oxidised by bromine water. The acid hydrolysis of ?? leads to a laevorotatory solution. The disaccharide ?? is : A. B. C. D. Ans: (a) A and D cannot be oxidised by bromine water as they do not have hemiacetal linkage. The acid hydrolysis of A leads to a laevorotatory solution. A is sucrose which is dextrorotatory, on acid hydrolysis gives mixture of alpha-D-glucose and beta-D-fructose, the mixture is laevorotatory 2022 JEE Advanced 2022 Paper 2 Online Q1: Treatment of D-glucose with aqueous ?? ?? ?? ?? results in a mixture of monosaccharides, which are A. B. C. D. Ans: (C) Page 4 JEE Advanced Previous Year Questions (2021-2023): Biomolecules 2023 JEE Advanced 2023 Paper 2 Online Q1. A disaccharide ?? cannot be oxidised by bromine water. The acid hydrolysis of ?? leads to a laevorotatory solution. The disaccharide ?? is : A. B. C. D. Ans: (a) A and D cannot be oxidised by bromine water as they do not have hemiacetal linkage. The acid hydrolysis of A leads to a laevorotatory solution. A is sucrose which is dextrorotatory, on acid hydrolysis gives mixture of alpha-D-glucose and beta-D-fructose, the mixture is laevorotatory 2022 JEE Advanced 2022 Paper 2 Online Q1: Treatment of D-glucose with aqueous ?? ?? ?? ?? results in a mixture of monosaccharides, which are A. B. C. D. Ans: (C) 2021 JEE Advanced 2021 Paper 1 Online MCQ (More than One Correct Answer) Q1: Given : The compound(s), which on reaction with ?? ?? ?? ?? will give the product having degree of rotation, [ ?? ] ?? = - ???? . ?? ° is (are) A. B. Page 5 JEE Advanced Previous Year Questions (2021-2023): Biomolecules 2023 JEE Advanced 2023 Paper 2 Online Q1. A disaccharide ?? cannot be oxidised by bromine water. The acid hydrolysis of ?? leads to a laevorotatory solution. The disaccharide ?? is : A. B. C. D. Ans: (a) A and D cannot be oxidised by bromine water as they do not have hemiacetal linkage. The acid hydrolysis of A leads to a laevorotatory solution. A is sucrose which is dextrorotatory, on acid hydrolysis gives mixture of alpha-D-glucose and beta-D-fructose, the mixture is laevorotatory 2022 JEE Advanced 2022 Paper 2 Online Q1: Treatment of D-glucose with aqueous ?? ?? ?? ?? results in a mixture of monosaccharides, which are A. B. C. D. Ans: (C) 2021 JEE Advanced 2021 Paper 1 Online MCQ (More than One Correct Answer) Q1: Given : The compound(s), which on reaction with ?? ?? ?? ?? will give the product having degree of rotation, [ ?? ] ?? = - ???? . ?? ° is (are) A. B. C. D Ans: (C,D) Monosaccharide oxidises on reacting with H NO 3 to form carboxylic acids. Primary alcohols also oxidise to carboxylic acid alongwith aldehyde. Complete reaction is as follows :Read More
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FAQs on JEE Advanced Previous Year Questions (2021-2023): Biomolecules - Chemistry for JEE Main & Advanced
| 1. What are the four main classes of biomolecules? |  |
Ans. The four main classes of biomolecules are carbohydrates, lipids, proteins, and nucleic acids.
| 2. What is the primary function of carbohydrates in living organisms? | |
Ans. Carbohydrates serve as a primary source of energy and provide structural support in cells.
| 3. How are lipids different from other biomolecules? | |
Ans. Lipids are hydrophobic molecules that are insoluble in water, unlike carbohydrates, proteins, and nucleic acids.
| 4. What is the building block of proteins? | |
Ans. The building blocks of proteins are amino acids.
| 5. How do nucleic acids contribute to genetic information? | |
Ans. Nucleic acids, such as DNA and RNA, store and transmit genetic information in living organisms.
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