Fructose

Q. Find out the total number of optical isomer in the glucose?

1. 10
2. 12
3. 8
4. 16

Q. Glycosidic linkage is an

1. ester linkage
2. peptide linkage
3. ether linkage
4. Both (a) and (c).

Q. Fructose gives silver mirror test with Tollen's reagent. It shows the presence of

1. Asymmetric carbons
2. $\alpha$-hydroxy ketones
3. aldehyde group
4. All of the above.

Q. In fructose the possible optical isomers are:

Q. How many type of products are possible in cross aldol reaction?

1. 1
2. 2
3. 3
4. 4

Q.

Furanose ring structure of fructose is due to hemiacetal formation between

1. C₁ and C₂

2. C₂ and C₅

3. C₂ and C₆

4. C₁ and C₅

Q.

Fructose on reduction gives a mixture of two alcohols which are related as ?

1. Diastereomers

2. Both (a) and (b)

3. Anomers

4. Epimers

Q. Sucrose is a _______ compound and the product mixture obtained from its hydrolysis is _______ in nature.

1. dextrorotatory; dextrorotatory
2. dextrorotatory; laevorotatory
3. laevorotatory; dextrorotatory
4. laevorotatory; laevorotatory

Q. Glycosidic linkage is an

1. ester linkage
2. peptide linkage
3. ether linkage
4. Both (a) and (c).

Q. Which of the following(s) is/are true regarding the reaction of sucrose to give fructose and glucose?

1. It can take place in the presence of enzyme sucrase
2. It results in the formation of a glycosidic bond
3. It is an inversion reaction
4. It is a hydrolysis reaction

Q.

$Glucose$ $+C{H}_{3}OH\stackrel{HCl\left(g\right)}{\to }$	(1)Mannose
$Sucrose$ $+H_3{O}^{+}\to$	(2) Galactose
$Fructose$ $\stackrel{Base}{\to }$	(3) Glucose
$Lactose$ $+H_3{O}^{+}\to$	(4) Fructose
	(5) Glucoside

1. A-4; B-4, 5; C-1, 2; D-1, 3
2. A-5; B-3, 4; C-2, 3; D-1, 2
3. A-3; B-4, 1; C-3, 5; D-1, 2
4. A-5; B-3, 4; C-1, 3; D-2, 3

Q.

Can fructose form a pyranose ring?

Q. $C{H}_3-\underset{C{H}_3}{\underset{|}{C}}H-\stackrel{O}{\stackrel{||}{C}}-C_6{H}_5\stackrel{MCPBA}{\to }\left[X\right]$

1. $C{H}_3-\underset{C{H}_3}{\underset{|}{C}}H-O-\stackrel{O}{\stackrel{||}{C}}-C_6{H}_5$
2. $C{H}_3-\underset{C{H}_3}{\underset{|}{C}}H-\stackrel{O}{\stackrel{||}{C}}-O{C}_6{H}_5$
3. $C{H}_3-C{H}_2-O-\stackrel{O}{\stackrel{||}{C}}-C{H}_2-C_6{H}_5$
4. $C_6{H}_5-C{H}_2-O-\stackrel{O}{\stackrel{||}{C}}-C{H}_2-C{H}_3$

Q. Cyclic form of Fructose is called as:

1. D-fructopyranose
2. D-glucofuranose
3. dextrose
4. D-fructofuranose

Q. What will be the product of the reaction?

Q. Explain the structure of fructose.

Q.

Furanose ring structure of fructose is due to hemiacetal formation between

1. C₁ and C₂

2. C₂ and C₅

3. C₂ and C₆

4. C₁ and C₅

Q. Elucidate the structure of fructose.

Q.

Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with t_1/2 = 3.00 hours. What fraction of sample of sucrose remains after 8 hours?

Q.
X, Y, Z in the above sequence:

1. Diastase, Maltase, Zymase
2. Pepsine, Zymase, Invertase
3. Maltase, Invertase, Zymase
4. Invertase, Maltase, Zymase

Q. Glucose and fructose are

1. Isotopes
2. Isotones
3. Isomers
4. Homologues of each other

Q. Which of the following will undergo nitration slower than benzene

Q. Assertion :Electrolysis of sodium benzoate gives in aqueous medium fails to produce biphenyl. Reason: Electrolysis of sodium benzoate gives phenyl benzoate as major product.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is wrong but reason is correct.

Q. Fructose on reduction gives a mixture of two alcohols which are related as:

1. Diastereomers
2. Both (A) and (B)
3. Epimers
4. Anomers

Q. State whether the following statements are True or False:

1. True
2. False

Q. Alcohol not metabolised is changed into

1. Butanol
2. Butyric acid
3. Acetic acid
4. Acetaldehyde

Q. The replacement of a hydrogen atom in benzene by alkyl group can be brought about with the following reagents :

1. alkanol and acid
2. alkyl chloride and $AlC{l}_3$
3. alkanol and alkali
4. alkene and $AlC{l}_3$

Q.

Furanose ring structure of fructose is due to hemiacetal formation between

1. C₂ and C₅

2. C₂ and C₆

3. C₁ and C₅

4. C₁ and C₂

Q. Which of the following is the correct statement about I and II?

1. I is reducing sugar
2. II is reducing sugar
3. I & II both are reducing sugar
4. None of the two is reducing sugar