Glucose

Q. For 'invert sugar', the correct statement(s) is/are:
(Given: specific rotations of (+)-sucrose, (+)-maltose, L-(-)-glucose and L-(+)-fructose in aqueous solution are $+{66}^{\circ },+{140}^{\circ },-{52}^{\circ }and+{92}^{\circ },$ respectively)

1. ‘invert sugar’ is prepared by acid catalyzed hydrolysis of maltose
2. ‘invert sugar’ is an equimolar mixture of D-(+)-glucose and D-(–)-fructose
3. specific rotation of ‘invert sugar’ is $-{20}^{\circ }$
4. On reaction with $B{r}_2$ water, ‘invert sugar’ forms saccharic acid as one of the products

Q. Starch is a polymer of

1. Glucose
2. Fructose
3. Both (a) and (b)
4. None of these

Q. Glucose on reduction with $Na/Hg$ and water gives:

1. Sorbitol
2. Fructose
3. Saccharic acid
4. Gluconic acid

Q.

Which of the following reaction indicates the presence of primary alcoholic group in glucose?

1. Reaction with (CH₃CO)₂O

2. Heating with HI

3. Oxidation with HNO₃

4. Reaction with NH₂OH

Q. Identify the product $“Z”$ in the following series of reactions:

1. Hexanoic acid
2. $\alpha$-methyl caproic acid
3. Heptanoic acid
4. None of these

Q. What does the following reaction of glucose with HI elucidates about the structure of glucose?

1. Shows the presence of six carbons linked linearly.
2. Shows the presence of $C=O$ group.
3. Shows the presence of ring structure of glucose.
4. Shows the presence of $-CHO$ group.