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Which one of the following does not exhibit thephenomenon of mutarotation ? [2010]
- a)(+) – Sucrose
- b)(+) – Lactose
- c)(+) – Maltose
- d)(–) – Fructose
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which one of the following does not exhibit thephenomenon of mutarotat...
Sucrose does not have free — CHO or
CO group, hence it does not undergo
mutarotation.
CO group, hence it does not undergo
mutarotation.
Most Upvoted Answer
Which one of the following does not exhibit thephenomenon of mutarotat...
Mostly all non reducing sugars does not show mutarotation.As they don't have free CHO group ..REMEMBER THIS
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Community Answer
Which one of the following does not exhibit thephenomenon of mutarotat...
Explanation:
Mutarotation:
Mutarotation is the process by which the specific rotation of a compound in solution changes over time due to the reversible change between two anomeric forms. This phenomenon is commonly observed in certain carbohydrates.
Analysis of options:
- (+) - Sucrose: Sucrose does not exhibit mutarotation because it is a non-reducing sugar composed of glucose and fructose linked by a glycosidic bond. As a result, it does not have a free anomeric carbon to undergo mutarotation.
- (+) - Lactose: Lactose exhibits mutarotation as it is composed of glucose and galactose linked by a β(1→4) glycosidic bond. The anomeric carbon of glucose can freely interconvert between α and β forms.
- (+) - Maltose: Maltose exhibits mutarotation as it is composed of two glucose molecules linked by an α(1→4) glycosidic bond. The anomeric carbon of one glucose molecule can undergo mutarotation.
- (–) - Fructose: Fructose is a monosaccharide that can undergo mutarotation due to the presence of a free anomeric carbon.
Therefore, the correct answer is option 'A' - (+) - Sucrose, as sucrose does not exhibit the phenomenon of mutarotation.
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Which one of the following does not exhibit thephenomenon of mutarotation ? [2010]a)(+) – Sucroseb)(+) – Lactosec)(+) – Maltosed)(–) – FructoseCorrect answer is option 'A'. Can you explain this answer?
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