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Which of the following set of molecules ...

Which of the following set of molecules give same osazone when reacted with excess of phenylhydrazine :-

A

D-glucose , D-fructose and D-galactose

B

D-glucose ,D-fructose

C

D-glucose, D-mannose and D-galactose

D

D-fructose , D-mannose and D-galactose

Text Solution

Verified by Experts

The correct Answer is:
B

D-glucose , D-fructose and D-mannose give the same osazone because they differ in configuration only at `C_1` and `C_2` but have the same configuration at `C_3,C_4 and C_5`.
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PRADEEP-BIOMOLECULES -Competition Focus JEE(Main and Adanced)/Medical Entrance Special (I . Multiple Choice Questions)
  1. Glucose when reduced with HI and red phosphorus gives

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  2. Glucose molecule reacts with X number of molecules of phenylhydrazine ...

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  3. Which of the following set of molecules give same osazone when reacted...

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  4. Ribose and 2-deoxyribose can be differentiated by

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  5. Glucose does not react with :

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  6. D(+) glucose reacts with hydroxylamine and yields an oxime. The struc...

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  7. alpha-D(+)-glucose and beta-D(+) glucose are

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  8. Which of the following is a non-reducing sugar?

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  9. Which one of the following does not exhibit the phenomenon of mutarota...

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  10. The beta (beta) and alpha (alpha) glucose have different specific rota...

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  11. Fructose reduces Tollens' reagent due to :

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  12. In the following structure, anomeric carbon is

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  13. Which set of terms correctly identifies the carbohydrate shown ? 1...

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  14. The following carbohydrate is

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  15. Which of the following has maximum laevorotation ?

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  16. Hydrolysis of sucrose is called

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  17. Which one of the following sets of monosaccharides forms sucrose ?

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  18. alpha-Maltose consists of

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  19. Which one of the following statements is not true regarding ( +) Lacto...

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  20. The statement that is NOT correct is that

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