What is the molecular formula of fructose?

Match items of Row I with those of Row II.

Row I:

(P)

(Q)

(R)

(S)

Row II:

(i) $\mathrm{\alpha }‐\mathrm{D}‐(—)$ Fructofuranose.

(ii) $\mathrm{\beta }‐\mathrm{D}‐(—)$ Fructofuranose.

(iii) $\mathrm{\alpha }‐\mathrm{D}‐(‐)$ Glucopyranose.

(iv) $\mathrm{\beta }‐\mathrm{D}‐(‐)$ Glucopyranose.

Correct match is

The formulas of $\mathrm{A}$ and $\mathrm{B}$ for the following reaction sequence are

Multiple selects questions:

Fructose on reduction gives a mixture of two alcohols which are related as:

How many of the following are stereoisomers of $D$-glucose ?

$i.$  $D$-fructose

$ii.$ $D$-ribose

$iii.$ $L$-glucose 

$iv.$ $D$-galactose

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

How many alcohol groups are present in Fructofuranose structure?

The fischer projection of D-fructose is given below, write the fischer projection of L-fructose.