Which of the following compounds gives a yellow precipitate with $I_2$ and $NaOH$?

When ethyl alcohol $({C_2}{H_5}OH)$ reacts with thionyl chloride,in the presence of pyridine,the product obtained is

Which of the following compounds will give the iodoform test?

An optically active alcohol of formula $C_9H_{12}O_2$ produced the following compound when refluxed with $KMnO_4$. What is the structure of $(A)$? The original compound showed these properties also:
$\mathop {C_9H_{12}O_2}\limits_{(A)} \xrightarrow{Na} H_2 \text{ liberated}$
$\mathop {C_9H_{12}O_2}\limits_{(A)} \xrightarrow{Br_2} \text{ no rapid reaction}$
$\mathop {C_9H_{12}O_2}\limits_{(A)} \xrightarrow[{cool}]{CrO_3 / H^{+}} C_9H_8O_3$

What is obtained by the reaction of primary and secondary alcohols with red-hot copper?

Which of the following statements is correct regarding the rate of dehydration in alcohols?