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)
The alcohols containing two - OH groups are called ......

Explanation

To solve the question, we need to fill in the blank with the appropriate term that describes alcohols containing two -OH groups.

Step 1: Identify the type of alcohol based on the number of -OH groups.
- Alcohols can be classified based on the number of hydroxyl (-OH) groups they contain.
- Monohydric alcohols have one -OH group, dihydric alcohols have two -OH groups, and trihydric alcohols have three -OH groups.

Step 2: Determine the correct term for alcohols with two -OH groups.
- Since the question specifically asks for alcohols containing two -OH groups, the correct term is "dihydric."
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