Alcohols Phenol...

Which one of the following cannot be the product of the dehydration reaction of the above shown alcohol?

What is $$A$$ ?

Reactions I and II are limited mainly to naphthalene compounds. These reactions are called, respectively:

When the given compound is treated with $${C}_{2}{H}_{5}MgBr$$ followed by hydrolysis, the product is:

Give the decreasing order of reactivity of the following alkyl halides in the Williamson' s reaction.
i. $$\displaystyle \left ( CH_{3} \right )_{3}C-CH_{2}Br$$
ii. $$\displaystyle ClCH_{2}CH=CH_{2}$$
iii. $$\displaystyle ClCH_{2}CH_{2}CH_{3}$$
iv. $$\displaystyle  BrCH_{2}CH_{2}CH_{3}$$

The product (B) is :

The compound (A) is:

Which statement is correct for the conversion of $$ROH$$ to $$RX$$ by reagents $$(A)$$ $$ ( SOCl_{2},\ PBr_{3}$$ $$ PCl_{3}$$ $$ Pl_{3},\:TsCl  )$$ compared to using $$HX$$?

Which statement is correct for the conversion of ROH to RX by reagents $$\displaystyle \left ( SOCl_{2},PBr_{3},PCl_{3},PI_{3} \right )$$  and TsCl compared to using HX?