Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 17

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IMPORTANT

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Nitrous acid $({HNO}_{2})$ converts amino acids into hydroxyl acids with the retention of configuration. Estimation of nitrogen gas evolved in the reaction is the basis of Van Slyke estimation of amino acids.

Which of the following amino acids cannot be analysed by Van slyke method?

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Important Questions on Biomolecules

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JEE Advanced

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 18

Glucose on reduction with

Na / Hg

and water gives:

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 19

The charring product when

C_{6} H_{12} O_{6}

is heated with concentrated

H_{2} {SO}_{4}

is due to:

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JEE Advanced

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 20

It is the best to carry out a reaction with sugar in neutral or acidic medium and not in alkaline medium, because in alkaline medium sugar undergoes:

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JEE Advanced

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 21

The correct statement(s) about the following sugars $X$ and $Y$ is/are:

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 22

Which forms Zwitter ion

?

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JEE Advanced

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 23

Alanine forms Zwitter ion, which exists as:

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JEE Advanced

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 24

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The correct statements about above structure of glucose are:

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Daily Practice Problems (DPP) Organic Chemistry Part 2 JEE Main and Advanced>Chapter 9 - Biomolecules>DPP 9.1>Q 25

D

-Mannose differs from

D

-glucose in its stereochemistry at

C - 2 .

The pyranose form of

D

-Mannose is: