Fill in the blanks by choosing the appropriate word/words from those given in the brackets.
(Monohydric, dihydric, trihydric, nitration, sulfonation, resonance stabilizaton, acidic, basic, `FeCl_(3)ZnCl_(2)`, more, less, aldehydes, ketones, Tollens' reagent, Luca's reagent, o-nitrophenol, p-nitrophenol, ethene, diethyl ether, fit, unfit, be, not be, `O_(2),Cl_(2)`, alkyl halides, oxonium, hydronium, alkyl, lone pairs of electrons, ethyl iodide, ethyl hydrogen sulfate, perchlorodiethyl ether, methyl iodide, ethyl hydrogensulfate, perchlorodiethyl ether, methyl iodide, dialkyl, hydrogen bonding, violet, green)
Phenol gives a ............... colouration with ferric chloride.

Explanation

To solve the question, we need to fill in the blank with the appropriate word from the given options. The statement is:

"Phenol gives a ............... colouration with ferric chloride."

1. **Understanding the Reaction**: We know that phenol (C6H5OH) reacts with ferric chloride (FeCl3). This reaction is a common test for the presence of phenolic compounds.

2. **Identifying the Color Change**: When phenol reacts with ferric chloride, it forms a complex that is known to produce a color change. The specific color produced in this reaction is violet.

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