Two statements, one Assertion (A) and the other Reason (R) are given. Choose the correct option.
Assertion: Maltose, a disaccharide, is a reducing sugar and is obtained by the partial hydrolysis of starch in presence of the enzyme diastase.
Reason: Hydrolysis of one mole of Maltose gives one mole each of $\alpha-D-$ Glucose and $\beta-D-$ Fructose.
Match the reactions of Glucose given in Column I with the major product formed in the reaction as in Column II.
| Column I - Reactions | Column II - Major product | ||
|---|---|---|---|
| A. | $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+\mathrm{HI}$ (Heat) | P. | $\mathrm{HOOC}-(\mathrm{CHOH})_4-\mathrm{COOH}$ |
| B. | $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+\mathrm{Br}_2(\mathrm{aq})$ | Q. | $\mathrm{CH}_3-\left(\mathrm{CH}_2\right)_4-\mathrm{CH}_3$ |
| C. | $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+$ Conc. $\mathrm{HNO}_3$ | R. | $\mathrm{NH}_4 \mathrm{O}-\mathrm{OC}-(\mathrm{CHOH})_4-\mathrm{CH}_2 \mathrm{OH}$ |
| D. | $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+2\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right] \mathrm{OH}$ | S. | $\mathrm{HOOC}-(\mathrm{CHOH})_4-\mathrm{CH}_2 \mathrm{OH}$ |
Given are 4 statements related to the chemical properties of Glucose.
Identify the two incorrect statements from the following.
A. It reacts with $$\mathrm{Br}_2$$ (aq) to form Saccharic acid.
B. Reacts with Acetic anhydride to form Glucose tetraacetate.
C. Reacts with Hydroxylamine to give Glucose oxime.
D. It reacts with ammoniacal $$\mathrm{AgNO}_3$$ to form ammonium salt of Gluconic acid with deposition of silver.
Two statements, Assertion and Reason are given. Choose the correct option from the following.
Assertion: In the secondary structure of RNA, double helix structure is formed.
Reason: In the double structure of RNA, two nucleic acid chains are wound about each other and held together by hydrogen bonds between pairs of bases