When neopentyl alcohol is heated with an acid, it slowly converted into an 85 : 15 mixture of alkenes A and B, respectively. What are these alkenes ?

1.
2.
3.
4.	and

The major product [B] in the following reaction is: 

  

1.		2.
3.		4.

The major product of the following reaction is :

1. 
2. 
3. 
4. 

Among the following identify the compounds which can be dehydrated very easily:

1.	CH3CH2CH2CH2CH2OH
2.
3.
4.

In the following sequence of reactions,
\(\mathrm{CH_3CH_2OH\xrightarrow{P+I_2}A\xrightarrow[ether]{Mg}B\xrightarrow{HCHO}C\xrightarrow{H_2O}D,}\)
then compound 'D' is:

1. Butanal

2. n-Butyl alcohol

3. n-Propyl alcohol

4. Propanal

What is the major product formed in the following reaction?
  

1.
2.
3.
4.