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JIPMER 2010

Exam: JIPMER
Year: 2010
Subject: Chemistry
Chapter: Biomolecules

JIPMER 2010 · Chemistry · Biomolecules

The general molecular formula for disaccharide is

The general molecular formula for disaccharide is

Options

A $\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}$
B $\mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}_{10}$
C $\mathrm{C}_{12} \mathrm{H}_{20} \mathrm{O}_{10}$
D $\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{10}$

Correct answer

A. $\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}$

Step-by-step solution

Disaccharides are the carbohydrates which on hydrolysis gives two same or different monosaccharides. Their general formula is

\mathrm{C}_{12} \mathrm{H}_{22}

\mathrm{O}_{11}

. eg,

\underset{

\text{ sucrose }

}{

\mathrm{C}_{12} \mathrm{H}_{22}

\mathrm{O}_{11}

}+

\mathrm{H}_2 \mathrm{O}

\xrightarrow{

\mathrm{H}^{+}

} \underset{

\text{ glucose }

}{

\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6}+

\underset{

\text{ fructose }

}{

\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6}

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