A disaccharide X cannot be oxidised by bromine water. The acid hydrolysis of X leads to a laevorotatory solution. The disaccharide X is
A disaccharide X cannot be oxidised by bromine water. The acid hydrolysis of X leads to a laevorotatory solution. The disaccharide X is
The Correct Option is A
Solution and Explanation
Sucrose and Its Properties
Sucrose is a non-reducing disaccharide composed of glucose and fructose units joined together by a glycosidic bond. Unlike reducing sugars, sucrose cannot be oxidized by bromine water because it does not have a reducing group (such as an aldehyde or a ketone) that can undergo oxidation.
When sucrose undergoes acid hydrolysis, it breaks down into its constituent monosaccharides, glucose and fructose. This process occurs due to the cleavage of the glycosidic bond between the two monosaccharides. The resulting mixture of glucose and fructose is known as invert sugar.
Invert sugar is laevorotatory, meaning it rotates plane-polarized light to the left. This property arises from the combination of glucose and fructose, which in their free form have optical activities that are not completely canceled out.
Conclusion:
Based on the information provided, the disaccharide X is most likely sucrose.
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Concepts Used:
Organic Chemistry - Some Basic Principles and Techniques
Organic Chemistry is a subset of chemistry dealing with compounds of carbon. Therefore, we can say that Organic chemistry is the chemistry of carbon compounds and is 200-225 years old. Carbon forms bond with itself to form long chains of hydrocarbons, e.g.CH4, methane and CH3-CH3 ethane. Carbon has the ability to form carbon-carbon bonds quite elaborately. Polymers like polyethylene is a linear chain where hundreds of CH2 are linked together.
Read Also: Organic Compounds
Importance of Organic Chemistry:
Organic chemistry is applicable in a variety of areas including-
- Medicines: Example- Aspirin which is a headache medicine and Ibuprofen is a painkiller, both are organic compounds. Other examples include paracetamol.
- Food: Example- Starch which is a carbohydrate is an organic compound and a constituent of rice and other grains. It is the source of energy.
- Clothing: Example- Nylon, Polyester and Cotton are forms of organic compounds.
- Fuels: Examples- Gasoline, Petrol and Diesel are organic compounds used in the automobile industry at large.