What is the major product (A) in the following reaction?

1.		2.
3.		4.

$\underset{\mathrm{dimethoxy} \mathrm{ethane}}{\overset{\mathrm{LiH}}{\to }}$L$\stackrel{{\mathrm{CH}}_3\mathrm{Li}}{\to }$M$\stackrel{{\mathrm{H}}_3{\mathrm{O}}^{+}}{\to }$ N + CH₃OH

Product (N) is:

1. 

2. 

3.       

4. 

$\stackrel{\mathrm{PCC}}{\to }$(A)$\underset{{\mathrm{H}}^{+}}{\overset{\mathrm{OH}-\mathrm{CH}2-\mathrm{CH}2-\mathrm{OH}}{\to }}$(B)$\stackrel{\left(1\right) \mathrm{MeMgBr} \left(2\right) {\mathrm{H}}_3{\mathrm{O}}^{+}}{\to }$
$$(C)$\stackrel{{\mathrm{NaBH}}_4\mathrm{EtOH}}{\to }$(D) Product

(D) in above reaction Is:

(a) 

(b) 

(c) 

(d) 

$\underset{\mathrm{Pyridine}}{\overset{\mathrm{TsCl}}{\to }}$(A)$\stackrel{{\mathrm{LiAlH}}_4}{\to }$(B)    

Product (B) of the above reaction is:

 $CHO$
$|$
$CH-OH \stackrel{2Hl{O}_4}{\to }$
$|$
$C{H}_2-OH$Products obtained in the above reaction are :

(1) HCHO, HCO₂H

(2) HCHO, 2HCO₂H

(3) CO₂, 2HCO₂H

(4) CO₂, HCHO, HCO₂H

Product Z of above reaction is :

Which of the following compounds is hemiacetal?
 

1
2.
3.
4.	All of these

What is the product obtained by heating the following allylic ether of phenol?

; Compounds (X) and (Y) can be differentiated by:
(1) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, NaOI

(2) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, then Fehling test

(3) ${\mathrm{H}}_3{\mathrm{O}}^{\oplus }$, then Na

(4) Both (b) and (c)

In the reaction  + CH₃OH $\stackrel{{\mathrm{CH}}_3\mathrm{ONa}}{\to }$Product.

The product is:

(1) 

(2) 

(3) 

(4)