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(A) Sucrose is not a reducing sugar. (...

(A) Sucrose is not a reducing sugar.
(R) In sucrose, glucose is in pyranose form and fructose is in furanose form.

A

Both A & R are true and R is the correct explanation of A

B

Both A & R are true, but R is not the correct explanation of A

C

A is true, R is false

D

A is false, R is true

Text Solution

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The correct Answer is:
B
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Statement-1: Glucose is in pyranose form and has free anomeric hydroxyl group Statement-1: In sucrose, glucose is in pyranose form and fructose is in furanose form.

(A) Lactose is a reducing sugar. (R) Lactose contains glucose and galactose units.

(A) In a sucrose molecule, glucose is present in the furanose form and fructose is present in the pyranose form. (R) Pyranose and furanose are homocyclic ring compounds.

(A) Sucrose is an example of reducing sugar. (R) Sucrose gives silver mirror test with Tollens reagent.

Why sucrose is called invert sugar ?

Sucrose contains glucose and fructose linked by

(A) Sucrose is a non-reducing carbohydrate. (R) In sucrose both the monosaccharides are in acetal form.

(A) Glucose shows mutarotation (R) Glucose is in pyranose form and has free anomeric hydroxyl group.

AAKASH SERIES-BIOMOLECULES-OBJECTIVE EXERCISE - 1
  1. Which of the following antiseptic is a carbohydrate ?  A) Streptomyc...

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  2. (A) Glucose shows mutarotation (R) Glucose is in pyranose form and h...

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  3. (A) Sucrose is not a reducing sugar. (R) In sucrose, glucose is in p...

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  4. (A) Fructose is the sweetest naturally occuring sugar. (R) Fructose...

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  5. (A) Cellulose is not digested by human beings. (R) Human beings are ...

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  6. (A) In a sucrose molecule, glucose is present in the furanose form and...

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  7. (A) Reducing sugars undergo mutarotion. (R) During mutarotation, one...

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  8. (A) Galactose is the C4 epimer of glucose. (R) Glucose and galacto...

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  9. (A) Sucrose is an example of reducing sugar. (R) Sucrose gives silve...

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  10. (A): Lactose on hydrolysis gives glucose and gallactose. (R): Lactos...

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  11. (A) Cellulose is not digested by human beings. (R) Human beings are ...

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  12. The peptide linkage is

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  13. Which of the following contains nitrogen ?

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  14. The building unit of all proteins are

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  15. Number of peptide linkages in the artificial sweetner ''aspartame'' is

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  16. The structural feature which distinguishes proline from alpha - amino ...

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  17. Which of the following amino acids possesses a non polar side chain

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  18. Which of the following amino acids contains a thiol group in the side ...

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  19. The amino acid which contain a hydroxy group in the side chain

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  20. Essential amino acid among the following is

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