From the following compounds,determine the number of compounds that give $(i)$ a red colouration with ceric ammonium nitrate and $(ii)$ a positive iodoform test: $...........$.

An organic compound $A$ $(C_{6}H_{6}O)$ gives a dark green coloration with ferric chloride. On treatment with $CHCl_{3}$ and $KOH$,followed by acidification,it gives compound $B$. Compound $B$ can also be obtained from compound $C$ on reaction with pyridinium chlorochromate $(PCC)$. Identify $A, B$ and $C$.

Which of the following reactions gives alcohol or phenol as a product?
$(i)$ $C_2H_5COOH \xrightarrow{LiAlH_4} C_2H_5CH_2OH$
$(ii)$ $C_2H_5Br$ $\xrightarrow[\text{then } H_2O]{\text{Mg, dry ether}} C_2H_5MgBr$ $\xrightarrow{H_2O} C_2H_6$
$(iii)$ $\text{Benzene diazonium chloride} \xrightarrow{H_3PO_2, H_2O} \text{Benzene}$
$(iv)$ $4-\text{Chlorotoluene} \xrightarrow[300 \text{ atm}]{\text{NaOH, } 623 \text{ K}} 4-\text{Methylphenol}$

Which of the following statements are correct for phenol?
$(A)$ In general,phenol is more acidic than alcohol.
$(B)$ Phenol is used in the production of melamine plastic.
$(C)$ Phenol gives violet colour with neutral ferric chloride solution.
$(D)$ Phenol when heated with acetyl chloride gives phenetole.

$A$ new carbon-carbon bond formation is possible in

Product $(A)$ is