CBSE Class 12-science - Carbohydrates Videos

• difference between glucose and fructose?
• how many asymmetric carbon atoms are present gulose
• what are carbohydrate
• What are anomers?
• Mass of sucrose C₁₂H₂₂O₁₁ produced by mixing 84 gm of carbon, 12 gm of hydrogen and 56 L. O₂ at 1 atm & 273 K according to given reaction, is  C(s) + H₂(g) + O₂(g) → C₁₂H₂₂O₁₁(s)
• Give one example each for reducing and non-reducing sugars.
• Why are carbohydrates generally optically active?
• An optically active compound having molecular formula C₆H₁₂O₆ is found in two isomeric forms (A) and (B) in nature. When (A) and (B) are dissolved in water they show the following equilibrium:(i) What are such isomers called? (ii) Can they be called enantiomers? Justify your answer. (iii) Draw the cyclic structure of isomer (A).
• Despite having an aldehydic group:(a) Glucose does not give 2, 4-DNP test. What does this indicate?(b) Draw the howorth structure of -D-(+)-Glucopyranose.(c) What is the significance of D and (+) here?
• Why are carbohydrates generally optically active?

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