Question:
Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate?
Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate?
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Deoxy sugars lack one oxygen atom compared to normal sugars.
Updated On: Mar 6, 2026
- Lactose
- Fructose
- Glucose
- Rhamnose
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The Correct Option is D
Solution and Explanation
Step 1: General formula of carbohydrates.
Most carbohydrates follow the general formula (CH$_2$O)$_n$.
Step 2: Exception to the rule.
Some carbohydrates contain modified groups and do not strictly follow this formula.
Step 3: Identifying rhamnose.
Rhamnose is a deoxy sugar in which one hydroxyl group is replaced by hydrogen.
Step 4: Conclusion.
Thus, rhamnose is a carbohydrate that does not follow the general formula.
Most carbohydrates follow the general formula (CH$_2$O)$_n$.
Step 2: Exception to the rule.
Some carbohydrates contain modified groups and do not strictly follow this formula.
Step 3: Identifying rhamnose.
Rhamnose is a deoxy sugar in which one hydroxyl group is replaced by hydrogen.
Step 4: Conclusion.
Thus, rhamnose is a carbohydrate that does not follow the general formula.
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