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Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced


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11 Questions MCQ Test Chemistry 35 Years JEE Main & Advanced Past year Papers | Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced

Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced for JEE 2023 is part of Chemistry 35 Years JEE Main & Advanced Past year Papers preparation. The Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced questions and answers have been prepared according to the JEE exam syllabus.The Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced MCQs are made for JEE 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced below.
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Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 1

The pair of compounds in which both the compounds  give positive test with Tollen’s reagent is

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 1

Glucose being an aldose responds to Tollen’s test while fructose, although a ketose, undergoes rearrangement in presence of basic medium (provided by Tollen’s reagent) to form glucose, which then responds to Tollen’s test.

Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 2

The two forms of D-glucopyranose obtained from the solution of D-glucose are called

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 2

The two is omeric forms (a – and b –) of D-glucopyronose differ in configuration only at C– 1; hence these are called anomers.

Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 3

Cellulose upon acetylation with excess acetic anhydride/ H2SO4 (catalytic) gives cellulose triacetate whose structure is

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 3

Cellulose is a polysaccharide composed of only Dglucose units. Every adjacent glucose units are joined by β-glycosidic linkage between C1 of one glucose and C4 of the next.
NOTE : Thus in every glucose units only three –OH groups are free to form triacetate.


Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 4

Among cellulose, poly (vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest is

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 4

Nylon and cellulose, both have in termolecular hydrogen bonding, polyvinyl chloride has dipoledipole interaction, while natural rubber has van der Waal forces which are weakest.

Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 5

The correct statement about the following disaccharide is

Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 6

The following carbohydrate is

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 6

It is a β-pyranose hence it is an aldohexose.

Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 7

On complete hydrogenation, natural rubber produces

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 7


*Multiple options can be correct
Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 8

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

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 8

We know that carbohydrates having acetal linkage are non-reducing while that with hemiacetal linkage are reducing. In the give structure,

X has acetal linkage, hence non-reducing.
Y has hemiacetal linkage, hence reducing.
Further X is a-anomer, while Y is β-anomer of D-(+)-glucose.

*Multiple options can be correct
Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 9

The correct functional group X and the reagent/reaction conditions Y in the following scheme are

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 9

Condensation polymers are formed by condensation of a diol or diamine with a dicarboxylic acid.




*Multiple options can be correct
Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 10

The structure of D-(+)-glucose is

The structure of L-(–)-glucose is

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 10

*Multiple options can be correct
Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 11

For ‘invert sugar’, the correct statement(s) is(are)
(Given : specific rotations of (+) -sucrose, (+)-maltose, L-(-)-glucose and L-(+) fructose in aqueous solution are + 66°, +140°, –52° and +92°, respectively) 

Detailed Solution for Test: MCQs (One or More Correct Option): Carbohydrates, Amino Acids, Polymers & Miscellaneous | JEE Advanced - Question 11

Invert sugar is an equimolar mixture of D-(+) glucose and D(–) glucose.

• Specific rotation of invert sugar = 

• D-glucose on oxidation with Br2-water pr oduces gluconic acid and not saccharic acid.

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