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  • Stuck here, help me understand: Which one of the following sets of monosaccharides forms sucrose?

Which one of the following sets of monosaccharides forms sucrose?

  • Option 1)

    \alpha -D-Galactopyranose and \alpha -D- fructofuranose

  • Option 2)

    \alpha -D-Glucopyranose and \beta -D-fructofuranose

  • Option 3)

    \beta -D-Glucopyranose and \alpha -D-fructofuranose

  • Option 4)

    \alpha -D-Glucopyranose and \beta -D-fructofuranose

 

Answers (1)

best_answer

As we learnt in

Sucrose -

Non reducing sugar formed by condensation of one molecule each of glucose and fructose

- wherein

On hydrolysis givesD-left ( + ight )- glucose and 

D-left ( - ight )- glucose

 

 

 

 

\alpha -D-Glycopyromose and \:\beta -D\ fructopyramose\ are\ mono\ saccharides\ of\ Sucrose.


Option 1)

\alpha -D-Galactopyranose and \alpha -D- fructofuranose

This option is incorrect.

Option 2)

\alpha -D-Glucopyranose and \beta -D-fructofuranose

This option is correct.

Option 3)

\beta -D-Glucopyranose and \alpha -D-fructofuranose

This option is incorrect.

Option 4)

\alpha -D-Glucopyranose and \beta -D-fructofuranose

This option is incorrect.

Posted by

prateek

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