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MCQ (Previous Year Questions) - Biomolecules (Level 2) - JEE MCQ


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8 Questions MCQ Test - MCQ (Previous Year Questions) - Biomolecules (Level 2)

MCQ (Previous Year Questions) - Biomolecules (Level 2) for JEE 2024 is part of JEE preparation. The MCQ (Previous Year Questions) - Biomolecules (Level 2) questions and answers have been prepared according to the JEE exam syllabus.The MCQ (Previous Year Questions) - Biomolecules (Level 2) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for MCQ (Previous Year Questions) - Biomolecules (Level 2) below.
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MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 1

Which of the following pairs given positive Tollen’s test ?          [IIT 2004]

Detailed Solution for MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 1
Aldehydes and α- hydroxy ketones give positive Tollen’s test. Glucose has an aldehydic group and fructose is an α hydroxy ketone.
MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 2

The two forms of D-glucopyranose obtained from the solution of D-glucose are called:        [IIT 2005]

Detailed Solution for MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 2
The two forms of D glucopyranose are called ANOMERS since they differ at configuration at the first carbon.
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MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 3

                 [IIT 2006]

MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 4

Cellulose upon acetylation with excess acetic anhydride/H2SO4 (catalytic) gives cellulose triacetate whose
structure is                 [IIT 2007]

MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 5

Among cellulose, poly (vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular
force of attraction is weakest is :                 [IIT 2008]

*Multiple options can be correct
MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 6

The correct statement(s) about the following sugars X and Y is (are)            [IIT 2009]

Detailed Solution for MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 6
You can identify a sugar by looking for the anomeric carbon. (The anomeric C is the first stereocenter of the molecule.) If that stereocenter has an OH group coming off of it then it is a reducing sugar. Hence (B) is correct. As for (C) alpha bonds are formed when the OH on the carbon-1 is below the glucose ring. While beta bonds are formed when the OH is above the plane. Hence the stereochemistry of the two compounds show that Y has a Beta linkage. Hope it helps.
MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 7

The correct statement about the following disaccharide is               [IIT 2010]

MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 8

The following carbohydrate is

Detailed Solution for MCQ (Previous Year Questions) - Biomolecules (Level 2) - Question 8
It is bita glucose or bita pyranose so an aldohexose.
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