Biochemistry: MCQ on Carbohydrate chemistry Part 5

Carbohydrates are a common class of simple organic compouds. A carbohydrate is an aldehyde or a ketone that has additional hydroxyl groups. The simplest carbohydrates are called monosaccharides, which has the basic structure (C·H2O)n, where n is three or greater. Monosaccharides link together to form oligosaccharides and polysaccharides. Two monosaccharides …

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Carbohydrates are a common class of simple organic compouds. A carbohydrate is an aldehyde or a ketone that has additional hydroxyl groups. The simplest carbohydrates are called monosaccharides, which has the basic structure (C·H2O)n, where n is three or greater. Monosaccharides link together to form oligosaccharides and polysaccharides. Two monosaccharides link together to form a disaccharide.

Here few MCQs questions about Carbohydrate
1. The approximate number of branches in amylopectin is
(A) 10
(B) 20
(C) 40
(D) 80

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2. In amylopectin the intervals of glucose units of each branch is
(A) 10–20
(B) 24–30
(C) 30–40
(D) 40–50

3. A polymer of glucose synthesized by the action of leuconostoc mesenteroids in a sucrose medium is
(A) Dextrans
(B) Dextrin
(C) Limit dextrin
(D) Inulin

4. Glucose on reduction with sodium amalgam forms
(A) Dulcitol
(B) Sorbitol
(C) Mannitol
(D) Mannitol and sorbitol

5. Glucose on oxidation does not give
(A) Glycoside
(B) Glucosaccharic acid
(C) Gluconic acid
(D) Glucuronic acid

6. Oxidation of galactose with conc HNO3 yields
(A) Mucic acid
(B) Glucuronic acid
(C) Saccharic acid
(D) Gluconic acid

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7. A positive Benedict’s test is not given by
(A) Sucrose
(B) Lactose
(C) Maltose
(D) Glucose

8. Starch is a
(A) Polysaccharide
b(B) Monosaccharide
(C) Disaccharide
(D) None of these

9. A positive Seliwanoff’s test is obtained with
(A) Glucose
(B) Fructose
(C) Lactose
(D) Maltose

10. Osazones are not formed with the
(A) Glucose
(B) Fructose
(C) Sucrose
(D) Lactose

 

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