A reducing sugar is any sugar that is capable of acting as a reducingagent because it has a free aldehyde group or a free ketone group. All monosaccharides are reducing sugars.
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24.Which carbohydrate is called grape sugar? Give its condensed structural formula.
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25.
Write two main functions of carbohydrates in plants.
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26.
Classify the following into monosaccharides and disaccharides: Ribose, 2-deoxy-ribose, maltose, galactose, fructose and lactose.
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27.
What happens when sucrose is boiled with dilute HCl?
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28.
Give one reaction to show the presence of five hydroxyl groups in glucose.
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29.
How will you prove that all the carbon atoms of a glucose are in a straight chain?
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30.
Name the linkage when two monosaccharides unit join to form a polysaccharide unit.
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