Maltose

Q. Hydrolysis of sucrose gives :

1. $\alpha$-D(+)Glucose and $\alpha$-D(-)Fructose
2. $\alpha$-D(+)Glucose and $\beta$-D(-)Fructose
3. $\alpha$-D(-)Glucose and $\beta$-D(-)Fructose
4. $\alpha$-D(-)Glucose and $\alpha$-D(-)Fructose

Q. Which of the following compounds can be detected by molisch’s test?

1. Amines
2. Sugar
3. Primary alcohols
4. Nitro compounds.

Q. The reduction product of ethyl-3-oxobutanoate by $NaB{H}_4$ in methanol is

1. 
2. 
3. 
4. 

Q.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are correct statements and reason explains the assertion.
(b) Both assertion and reason are wrong statements.
(c) Assertion is correct statement and reason is wrong statement.
(d) Assertion is wrong statement and reason is correct statement.
(e) Assertion and reason both are correct statements but reason does not explain assertion.
Assertion (A) $\beta -$glycosidic linkage is present in maltose.
Reason (R) Maltose is composed of two glucose units in which C-1 of one glucose unit is linked to C-4 of another glucose unit.

Q. The correct statement about the following disaccharide is:

1. Ring (a) is pyranose with $\alpha$ - glycosidic link
2. Ring (a) is furanose with $\alpha$ - glycosidic link
3. Ring (b) is furanose with $\alpha$ - glycosidic link
4. Ring (b) is pyranose with $\beta$ - glycosidic link

Q. The absolute configuration at the two chiral centres in D- ribulose are

1. $3R,4R$
2. $3R,4S$
3. $3S,4R$
4. $3S,4S$

Q. Maltose on treatment with dilute $HCl$ gives:

1. D–Galactose
2. D–Glucose and D–Fructose
3. D–Fructose
4. D–Glucose

Q.

Ninhydrin test for proteins results in the structure-

Q. The number of oxygen atoms present in maltose is

1. $6$
2. $10$
3. $11$
4. $22$

Q. Which glycosidic linkage is present in Maltose?

1. $\alpha -D-(+)-glucose\left(C_1\right)-O-\left(C_2\right)-\beta -D-(-)-glucose$
2. $\alpha -D-(+)-glucose\left(C_1\right)-O-\left(C_4\right)-D-(+)-glucose$
3. $\beta -D-(+)-glucose\left(C_1\right)-O-\left(C_4\right)-D-(-)-glucose$
4. $\beta -D-(+)-glucose\left(C_1\right)-O-\left(C_4\right)-D-(+)-glucose$

Q. What are the functional groups present in the structure of maltose ?

(JEE MAIN 2020)

1. One ketal and one hemiketal
2. One acetal and one hemicetal
3. Two acetals
4. One acetal and one ketal

Q. Maltose is made up of:

1. two $\alpha -D-$ glucose
2. normal $\beta -D-$ glucose
3. $\alpha -$ and $\beta -D-$ glucose
4. fructose

Q. The Fischer presentation of D-glucose is given below.


The correct structure(s) of $\beta -L-\text{glucopyranose}$ is (are)

1. 
2. 
3. 
4. 

Q. The major role of minor elements inside living organisms is to play role of

1. Co-factors of enzymes.
2. Building blocks of important amino acids.
3. Constituent of hormones.
4. Binder of cell structure.

Q. Match the following sugars with the linkage present in it

1. $C_1\mathrm{of}\mathrm{glucose},C_4\mathrm{of}\mathrm{galactose}$
2. $C_1\mathrm{of}\alpha -\mathrm{glucose},C_2-\beta \mathrm{fructose}$
   
3. $C_1-C_4\mathrm{linkage}\mathrm{of}\alpha -D\mathrm{glucose}\mathrm{units}$

Q. Glucose is an example of:

1. aldohexose
2. ketohexose
3. aldopentose
4. ketopentose

Q. Lactose is made of:

1. $\alpha -D$-glucose only
2. $\alpha -D$-glucose only and $\beta -D$-glucose
3. $\alpha -D$-galactose and $\beta -D$-glucose
4. $\beta -D$-galactose and $\beta -D$-glucose

Q. Number of chiral centers in maltose are _________.

Q. Maltose is hydrolysed to:

1. Glucose and Fructose
2. Glucose
3. Fructose
4. Glucose and Galactose

Q. Which of the following enzymes is required for the conversion of starch to maltose?

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

Q. Match the following sugars with the linkage present in it

1. $C_1\mathrm{of}\mathrm{glucose},C_4\mathrm{of}\mathrm{galactose}$
2. $C_1\mathrm{of}\alpha -\mathrm{glucose},C_2-\beta \mathrm{fructose}$
   
3. $C_1-C_4\mathrm{linkage}\mathrm{of}\alpha -D\mathrm{glucose}\mathrm{units}$

Q. Which of the following pairs give positive Tollen's test:

1. Glucose, Sucrose
2. Glucose, Fructose
3. Hexanol, acetophenone
4. Fructose, Sucrose

Q. Maltose contains how many oxygen atoms

1. 10
2. 11
3. 12
4. 6

Q. does lipid show flip flop movement?

Q. Glucose and fructose can be distinguished by:

1. Fehling's solution test
2. Furfural test
3. Seliwanoff's test
4. Molisch test

Q. Match the given pair.

Q. Which of the following represents ether?

1. $(RCO{)}_{2}O$
2. RCOOR
3. ROR
4. RCOR

Q. Glucose molecule reacts with 'X' number of molecules of phenylhydrazine to yield osazone. The value of 'X' is:

1. four
2. one
3. two
4. three

Q. Study the structure of maltose and mark the incorrect statement.

1. Maltose is composed of two $\alpha -D-$ glucose units
2. $C-1$ of one glucose is linked to $C-4$ of other unit
3. It is a non-reducing sugar
4. It is a disaccharide

Q. Maltose on treatment with dilute HCl gives:

1. D-Glucose and D-Fructose
2. D-Fructose
3. D-Glucose
4. D-Galactose