Disaccharides
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CHXII14:BIOMOLECULES

324545 Read the following statements and choose the correct answer
(I) All monosaccharides are reducing sugars.
(II) All monosaccharides are non-reducing sugars.
(III) In disaccharides if aldehydic or ketonic groups are bonded, these are non-reducing sugars.
(IV)In disaccharides if aldehydic or ketonic groups are free, these are reducing sugars. The correct statements are

1 (I), (III) and (IV)
2 (II), (III) and (IV)
3 (I) and (IV)
4 (II) and (IV)
CHXII14:BIOMOLECULES

324546 How many among the following is/are reducing sugar?
Sucrose, glucose, maltose and lactose

1 1
2 2
3 3
4 4
CHXII14:BIOMOLECULES

324547 Which of the following statements is not true regarding \((+)\) lactose?

1 \((+)\) lactose, \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\) contains - \(\mathrm{OH}\) groups
2 On hydrolysis, \((+)\) lactose gives equal amount of \(\mathrm{D}(+)\) glucose & \(\mathrm{D}(+)\) galactose
3 (+) lactose is a \(\beta\) glycoside \({\rm{\& }}\) a molecule of \(\mathrm{D}(+)\) galactose
4 (+) lactose is reducing sugar & does not exhibit mutarotation.
CHXII14:BIOMOLECULES

324548 Sucrose reacts with acetic anhydride to form

1 Penta-acetate
2 Hexa-acetate
3 Tetra-acetate
4 Octa-acetate
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CHXII14:BIOMOLECULES

324545 Read the following statements and choose the correct answer
(I) All monosaccharides are reducing sugars.
(II) All monosaccharides are non-reducing sugars.
(III) In disaccharides if aldehydic or ketonic groups are bonded, these are non-reducing sugars.
(IV)In disaccharides if aldehydic or ketonic groups are free, these are reducing sugars. The correct statements are

1 (I), (III) and (IV)
2 (II), (III) and (IV)
3 (I) and (IV)
4 (II) and (IV)
CHXII14:BIOMOLECULES

324546 How many among the following is/are reducing sugar?
Sucrose, glucose, maltose and lactose

1 1
2 2
3 3
4 4
CHXII14:BIOMOLECULES

324547 Which of the following statements is not true regarding \((+)\) lactose?

1 \((+)\) lactose, \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\) contains - \(\mathrm{OH}\) groups
2 On hydrolysis, \((+)\) lactose gives equal amount of \(\mathrm{D}(+)\) glucose & \(\mathrm{D}(+)\) galactose
3 (+) lactose is a \(\beta\) glycoside \({\rm{\& }}\) a molecule of \(\mathrm{D}(+)\) galactose
4 (+) lactose is reducing sugar & does not exhibit mutarotation.
CHXII14:BIOMOLECULES

324548 Sucrose reacts with acetic anhydride to form

1 Penta-acetate
2 Hexa-acetate
3 Tetra-acetate
4 Octa-acetate
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CHXII14:BIOMOLECULES

324545 Read the following statements and choose the correct answer
(I) All monosaccharides are reducing sugars.
(II) All monosaccharides are non-reducing sugars.
(III) In disaccharides if aldehydic or ketonic groups are bonded, these are non-reducing sugars.
(IV)In disaccharides if aldehydic or ketonic groups are free, these are reducing sugars. The correct statements are

1 (I), (III) and (IV)
2 (II), (III) and (IV)
3 (I) and (IV)
4 (II) and (IV)
CHXII14:BIOMOLECULES

324546 How many among the following is/are reducing sugar?
Sucrose, glucose, maltose and lactose

1 1
2 2
3 3
4 4
CHXII14:BIOMOLECULES

324547 Which of the following statements is not true regarding \((+)\) lactose?

1 \((+)\) lactose, \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\) contains - \(\mathrm{OH}\) groups
2 On hydrolysis, \((+)\) lactose gives equal amount of \(\mathrm{D}(+)\) glucose & \(\mathrm{D}(+)\) galactose
3 (+) lactose is a \(\beta\) glycoside \({\rm{\& }}\) a molecule of \(\mathrm{D}(+)\) galactose
4 (+) lactose is reducing sugar & does not exhibit mutarotation.
CHXII14:BIOMOLECULES

324548 Sucrose reacts with acetic anhydride to form

1 Penta-acetate
2 Hexa-acetate
3 Tetra-acetate
4 Octa-acetate
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CHXII14:BIOMOLECULES

324545 Read the following statements and choose the correct answer
(I) All monosaccharides are reducing sugars.
(II) All monosaccharides are non-reducing sugars.
(III) In disaccharides if aldehydic or ketonic groups are bonded, these are non-reducing sugars.
(IV)In disaccharides if aldehydic or ketonic groups are free, these are reducing sugars. The correct statements are

1 (I), (III) and (IV)
2 (II), (III) and (IV)
3 (I) and (IV)
4 (II) and (IV)
CHXII14:BIOMOLECULES

324546 How many among the following is/are reducing sugar?
Sucrose, glucose, maltose and lactose

1 1
2 2
3 3
4 4
CHXII14:BIOMOLECULES

324547 Which of the following statements is not true regarding \((+)\) lactose?

1 \((+)\) lactose, \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\) contains - \(\mathrm{OH}\) groups
2 On hydrolysis, \((+)\) lactose gives equal amount of \(\mathrm{D}(+)\) glucose & \(\mathrm{D}(+)\) galactose
3 (+) lactose is a \(\beta\) glycoside \({\rm{\& }}\) a molecule of \(\mathrm{D}(+)\) galactose
4 (+) lactose is reducing sugar & does not exhibit mutarotation.
CHXII14:BIOMOLECULES

324548 Sucrose reacts with acetic anhydride to form

1 Penta-acetate
2 Hexa-acetate
3 Tetra-acetate
4 Octa-acetate
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