$\alpha -D(+)$ Glucose and $\beta -D(+)$ Glucose are

Which of the following represents a nucleoside of $RNA$?

Match List-$I$ with List-$II$ for the following reaction pattern:
Glucose $\xrightarrow{\text{Reagent}}$ Product $\longrightarrow$ Structural prediction

List-$I$ (Reagents)	List-$II$ (Structural prediction)
$a$. Acetic anhydride	$i$. Glucose has an aldehyde group
$b$. Bromine water	$ii$. Glucose has a straight chain of six carbon atoms
$c$. Hydroiodic acid	$iii$. Glucose has five hydroxyl groups
$d$. Hydrogen cyanide	$iv$. Glucose has a carbonyl group

Choose the correct answer from the options given below.

An example of a non-reducing sugar is:

Which one is a disaccharide?

Assertion : Sucrose undergoes mutarotation.
Reason : Sucrose is a disaccharide.