1) What is the product of oxidation of glyceraldehyde by bromine water?
a) Glyceric acid
b) Gluconic acid
c) Glacturonic acid
d) Glucuronic acid
Correct answer: a) Glyceric acid
2) Which of the following is an intermediate in carbohydrate metabolism and used as Ca2+ gluconate for intravenous supplementation of calcium?
a) Rickets
b) Milk fever
c) Scurvy
d) Gluconic acid
Correct answer: d) Gluconic acid
3) Sialic acid is a carbohydrate-derived acid that is involved in the synthesis of:
a) Metastatic cancer cells
b) Salla disease
c) Bleeding gum
d) Glycolipids and glycoproteins
Correct answer: d) Glycolipids and glycoproteins
4) Glucuronic acid is synthesized in the liver and enters the structure of important molecules such as:
a) Mucopolysaccharides
b) Bilirubin
c) Steroid hormones
d) Glacturonic acid
Correct answer: a) Mucopolysaccharides
5) Which of the following is synthesized from gulose and acts as an antioxidant?
a) Sialic acid
b) Gluconic acid
c) L-ascorbic acid
d) Glucuronic acid
Correct answer: c) L-ascorbic acid
6) What is the product of oxidation of fructose?
a) Glyceric acid and gluconic acid
b) Glycollic acid and trihydroxybutyric acid
c) Glucuronic acid and galacturonic acid
d) Aldaric acid and mucic acid
Correct answer: b) Glycollic acid and trihydroxybutyric acid
7) Reduction of glyceraldehyde results in the formation of:
a) Glycerol
b) Ribitol
c) Sorbitol
d) Mannitol
Correct answer: a) Glycerol
8) Reduction of ribose leads to the formation of:
a) Glycerol
b) Ribitol
c) Sorbitol
d) Mannitol
Correct answer: b) Ribitol
9) What is the product of reduction of glucose?
a) Glycerol
b) Ribitol
c) Sorbitol
d) Mannitol
Correct answer: c) Sorbitol
10) Which sugar alcohol is injected intravenously to reduce intracranial hypertension?
a) Glycerol
b) Ribitol
c) Sorbitol
d) Mannitol
Correct answer: d) Mannitol
1) Inositol is a member of which vitamin complex?
a) Vitamin A
b) Vitamin B
c) Vitamin C
d) Vitamin D
Correct answer: b) Vitamin B
2) Which acid reacts with sugars to form glucose-6-phosphate?
a) Phosphoric acid
b) Nitric acid
c) HCl
d) HCN
Correct answer: a) Phosphoric acid
3) Diluted nitric acid gives which type of acids when reacting with sugars?
a) Uronic acids
b) Aldaric acids
c) Furfural
d) Hydroxymethyl furfural
Correct answer: a) Uronic acids
4) Which reagent is used to remove three molecules of water from sugars?
a) Phosphoric acid
b) Nitric acid
c) HCl
d) H2SO4
Correct answer: d) H2SO4
5) Which acid is highly toxic and can be treated with glucose solution?
a) Phosphoric acid
b) Nitric acid
c) HCl
d) HCN
Correct answer: d) HCN
6) What effect does hydroxylamine have on sugars?
a) Increases the number of carbon atoms
b) Decreases the number of carbon atoms
c) Breaks down the sugar into small fragments
d) Stimulates mutarotation
Correct answer: b) Decreases the number of carbon atoms
7) What is formed when concentrated alkalis like NaOH break down sugars?
a) Caramel
b) Glucose
c) Fructose
d) Mannose
Correct answer: a) Caramel
8) Which reagent is used to test the reducing properties of monosaccharides?
a) Cupric hydroxide
b) Bismuth Silver
c) Picric acid
d) NaOH
Correct answer: a) Cupric hydroxide
9) Which sugar is non-fermentable?
a) Sucrose
b) Maltose
c) Lactose
d) Glucose
Correct answer: c) Lactose
10) What is the enzyme complex present in yeast for fermentation?
a) Lactase
b) Sucrase
c) Zymase
d) Maltase
Correct answer: c) Zymase
11) What is the special tube used for fermentation tests?
a) Saccharimeter
b) Test tube
c) Flask
d) Beaker
Correct answer: a) Saccharimeter
12) What is formed when reducing sugars react with phenyl hydrazine?
a) Osazone
b) Uronic acid
c) Furfural
d) Enediol
Correct answer: a) Osazone