Test: Alcohols, Phenols & Ethers - NEET MCQ

Ketones are reduced to secondary alcohols.

All of these are mild oxidizing agent which can oxidize alcohols to aldehyde and ketone.

Phenols are acidic in nature so they react with bases to form phenoxide ion.

Because 3^o carbocation is most stable.

(a), (c)

(a) Br₂/water

(c) Neutral FeCl₃

LiAlH₄ is quite expensive.

Rxn of sodium ethoxide with alkyl halide is known as Williamsons synthesis.

Here, again carbon is not chiral in nature.
So, only one alcohol is chiral in nature

Foe the given conditions elimination domintes over substitution. And alkenes are formed.

Alcohols have strong H bonding.

Lucas test is distinguishing test for alcohols.

When –CH₂OH group is replaced by –COOH group then only molecular wt will increase by 14units.

Converstion of alcohol to alkyl halide is via substitution reaction.

The correct answer is Option A.
Phenol (C₆H₅OH) will react with sodium hydroxide solution in water , as phenols are more acidic than alcohols.

The correct answer is Option A.

Reimer Tiemann reaction which converts phenol to ortho- hydroxybenzaldehyde involves the formation of dichlorocarbene which acts as an electrophile and attacks on the ortho position of phenol.

Since the product of oxidation reacts with phenyl hydrazine, it is a carbonyl compound. Since it does not answer silver mirror test, it must be a ketone. Ketones are produced by the oxidation of secondary alcohols. So the compound X is isopropyl alcohol

Wurtz reaction.

Methanol is apoison and ingestion of even trace quantity can be fatal.

Pictric acid is trinitroderivative of phenol.

The correct answer is Option C.
Given molecule:

For IUPAC nomenclature following steps are followed:
1. Identify the functional group and their priority: -OH and -Cl are the side groups in the given molecule. OH has higher priority thus the name will have the suffix "ol".
2. Identify parent chain: The longest carbon chain that contains the functional group. Here its 6 C chain i.e hexyl
3. Assign locant number: lowest number to the main functional group and side chains i.e. 2-ol 
4. Identify side chains/groups: its chloro, and 5-chloro in the given molecule.

IUPAC name is: 5-chlorohexan-2-ol
 

Phenol is less acidic than O−nitrophenol. Nitro group is an electron-withdrawing group. It decreases electron density on benzene ring and delocalizes negative charge of phenoxide ion. It increases acidity. Hence, O−nitrophenol is more acidic than phenol. 

On the other hand, methoxy group is an electron releasing group. It increases electron density on benzene ring and does not delocalizes negative charge of phenoxide ion. It decreases acidity. Hence,  p−methoxyphenol is less acidic than phenol. Also, alcohols (2− methylpropanol and 2,2− dimethyl pentanol) are neutral.

Since monochlorinated compound is formed so that menas all the hydrogens are same.

RO^- has more electron density.