Carbohydrates

Which of the following carbohydrate is a reducing sugar?

Number of compounds from the following which will not produce orange red precipitate with Benedict solution is........
Glucose, maltose, sucrose, ribose,$2$-deoxyribose, amylose, lactose

Given below are two statements:

Statement I: Morphine is a narcotic analgesic. It helps in relieving pain without producing sleep.

Statement II: Morphine and its derivatives are obtained from opium poppy.

In the light of the above statements, choose the correct answer from the options given below

The statement/s which are true about antagonists from the following is/are:
A. They bind to the receptor site.
B. Get transferred inside the cell for their action.
C. Inhibit the natural communication of the body.
D. Mimic the natural messenger.
Choose the correct answer from the options given below:

$\mathrm{X}+{\mathrm{H}}_2\mathrm{O}\stackrel{}{\to }\mathrm{Glucose} + \mathrm{Fructose}$

How many oxygen atoms are present in $\mathrm{X}$?

How many sugars (or sugar derivatives) are reducing in nature?

(i) $\mathrm{\alpha }-\mathrm{D}$-Glucopyranose
(ii) Fructose
(iii) Sucrose
(iv) Lactose
(v) Maltose
(vi) $\mathrm{\beta }-\mathrm{D}$-Glucopyranose
(vii) Starch
(viii) ATP
(ix) DNA
(x) Methyl $\mathrm{\alpha }-\mathrm{D}$-glucopyranoside

Select the correct statement about invert sugar.

(Given: specific rotations of $\left(+\right)$-sucrose, $\left(+\right)$ -maltose, $\mathrm{L}$-$\left(-\right)$ -glucose and $\mathrm{L}$$\left(+\right)$-fructose in aqueous solution are $+66°,+140°,-52°$ and$+92°,$ respectively)

Raffinose is an example of 

A disaccharide consisting of two $\mathrm{\alpha }-\mathrm{D}-$glucose units in which ${\mathrm{C}}_1$ of one glucose is linked to ${\mathrm{C}}_4$ of another glucose unit is

Hydrolysis of sucrose is called:

The corresponding order of names of four aldoses with configuration given below, respectively is:

What does $\text{'}\mathrm{D}\text{'}$ and $(+)$ signifies in $\mathrm{D}-(+)$-glucose?

Which of the following is incorrect about sucrose?

Invert sugar on hydrolysis forms equimolar mixture of

Analyse the following reactions and identify incorrect statements where $\mathrm{X}$ and $\mathrm{Y}$ are two different aldohexoses and $\mathrm{Z}$ is a ketohexoses.

Disaccharide $\left(\mathrm{A}\right)\stackrel{{\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}}{\to }\mathrm{X}+\mathrm{Z}$

Disaccharide $\left(\mathrm{B}\right)\stackrel{{\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}}{\to }2\mathrm{X}$

Disaccharide $\left(\mathrm{C}\right)\stackrel{{\mathrm{H}}_2\mathrm{O}/{\mathrm{H}}^{+}}{\to }\mathrm{X}+\mathrm{Y}$

(a) $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ are reducing sugars.

(b) $\mathrm{B}$ and $\mathrm{C}$ have ${\mathrm{C}}_1-{\mathrm{C}}_4$ glycosidic linkage between two monosaccharide units.

(c)The two monosaccharide units of disaccharide carbon are ${\mathrm{C}}_4$ epimers.

(d) All the three disaccharides undergo mutarotation.

Lactose consists of:

Given: specific rotation of $(+)$ sucrose, $(+)$ maltose, $\mathrm{L}(-)$ glucose, $\mathrm{L}(+)$ fructose in aqueous, solution are $+66°,+140°,-52°$and$+92°$respectively. For 'invert sugar', the correct statements are?

(a) 'Invert sugar' is prepared by acid-catalyzed hydrolysis of maltose

(b) 'Invert sugar' is an equimolar mixture of $\mathrm{D}(+)$ glucose and $\mathrm{D}(-)$ fructose

(c) Specific rotation of  'invert sugar' is $(-20°)$

(d) On reaction with ${\mathrm{Br}}_2$ water ' invert sugar' forms saccharic acid as one of the products.

The compound which does not contain chiral carbon atom is