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On reduction of a monosaccharide A(C(4)H...

On reduction of a monosaccharide `A(C_(4)H_(8)O_(4))` mixture of two epimeric alcohols `B` & `C` is formed.
(a) Monosaccharide has aldehyde or ketone group ?
(b) Determine the structures of `A,B` and `C`.

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Carbohydrates play a vital role in our daily life. These are classified as monosacchrides, oligosaccharides and polysaccharides depending upon the number of smaller molecules on hydrolysis. It has been suggested that monosaccharides do not have a free aldehyde or ketonic group but have cyclic hemiacetal or hemiketal structures. D - Glucose exists in two isomeric stereoisomeric forms : alpha-D- glucose and beta-D glucose which have different positions of H and OH groups on first carbon atom. Disaccharides such as sucuose, maltose, lactose, etc., give monosaccharides on hydrolysis. Polysaccharides are starch, cellulose, glycogen, having molecular formula (C_(6)H_(10)O_(5))_(n) . Name the water insoluble component of starch.

Which alcohol with the formula C_4H_(10)O cannot be prepared by the reduction of aldehyde or ketone ?

An organic compound 'A' (C_(4)H_(10)O) is optically active. On mild oxidation, it gives a compound 'B' (C_(4)H_(8)O) but upon vigorous oxidation, it gives another compound 'C' (C_(3)H_(6)O_(2)) . The compound 'C' along with 'D' are also formed from 'B' by reacting with iodine in the presence of alkali. Deduce the structures of 'A', 'B', 'C' and 'D' .

A compound C_(6)H_(14)O_(2) has two tertiary alcoholic groups . The IUPAC name of this compound is

The number of cyclic alcohols with the formula C_(4)H_(8)O is

RESONANCE-BIOMOLECULES-Ex-2(Subjective)Part-I
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  2. Write the anomer the epimer, enantiomer and ketose of the following al...

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  3. Draw two anomers of D-fructose.

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  4. The specific rotation of two glucose anomers are alpha = + 110^(@) and...

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  5. Consider an amylose chain of 4000 glucose unit. At how many cleavage r...

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  6. Predict (A) :

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  7. A+4HlO(4) rarr 3HCOOH+HCHO+OHC-COOH B+5HlO(4) rarr 4HCOOH + 2HCHO ...

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  8. On reduction of a monosaccharide A(C(4)H(8)O(4)) mixture of two epimer...

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  9. On which side of neutrality (pH-7), the isoelectric point of the follo...

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  10. Glutomic acid (A) has isoelectric point 3.22 (a) What is the most li...

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  11. A polypeptide (Mol. wt = 360) formed by glycine (Mol. wt = 75) amino a...

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  12. 0.89 g of an alpha- amino acid (A) gave 0.224 lit. N(2) gas at NTP on ...

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  13. Hydrolysis of the following compound A in conc. HCl for several hours ...

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  14. Distinguish between (a) Glycine and acetamide (b) alpha -, beta - ...

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  15. An octapeptide (Mol.wt = 516 g) on complete hydrolysis given glycine a...

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  16. Give the amino acid sequence of the following polypeptides using the d...

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  17. Glutamic acid has lower isoelectric point while glutamine H(2)N-overse...

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  18. Give the following conversion acetaldehyde rarr alanine.

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  19. Complete the following reactions

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  20. Write the structures of monomers of the following polymers (a) [-CH(...

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