Phenols

To determine the product 'C' in the given reaction sequence, let us analyze each step:

1. Step 1: Bromination of Hydroxybenzaldehyde

The reaction begins with the bromination of hydroxybenzaldehyde. Since bromination is usually ortho-para directing due to the -OH group, bromine will add to the 5-position (ortho to the -OH group), forming compound 'A'.

1. Step 2: Formation of Oxime

Compound 'A' reacts with NH₂OH (hydroxylamine) to form an oxime at the aldehyde group, leading to the formation of compound 'B'.

1. Step 3: Beckmann Rearrangement

When compound 'B' is treated with P₂O_{5Δ, it undergoes a Beckmann rearrangement. This rearrangement converts the oxime into an amide, leading to the formation of compound 'C'.}

Based on the steps explained, the structure of 'C' can be deduced as follows:

Therefore, the correct answer is the amide corresponding to the reaction sequence provided.

The correct answer is (C) :

Both products are meta with respect to –CH₃.

The correct answer is (C) :

The correct answer is (A) :

To determine which compound 'X' corresponds to the given properties, let's analyze each piece of information one step at a time.

1. Compound 'X' is acidic and soluble in NaOH solution but insoluble in NaHCO₃ solution. This property matches with phenols. Phenols are acidic enough to dissolve in NaOH (strong base) but are not acidic enough to dissolve in NaHCO₃ (a weak base).
2. Compound 'X' gives a violet color with neutral FeCl₃ solution. This is a characteristic test for phenolic compounds, where the phenol forms a colored complex with iron (III) ions.

Given the above properties and tests, compound 'X' is likely a phenol. Among the options provided, we need to identify which compound is phenolic. Let's evaluate the provided options with the corresponding images:

The correct structure of phenol (Compound 'X')

Based on the analysis, the above image represents the structure of phenol, which matches all the described properties of compound 'X'. Thus, the correct answer is the structure represented by the image with data-src-id="65c0cc913024a030b43dbda3".

• The compound is acidic as it is a phenol.
• Phenols dissolve in NaOH due to their acidic nature but not in NaHCO₃ as they are not strong enough acids.
• The violet color with FeCl₃ solution confirms it.

The question is about identifying the phenolic group using a specific chemical test. Here's a step-by-step explanation:

A phenolic group is characterized by a hydroxyl group (-OH) attached to an aromatic ring.

To test for the presence of phenolic groups, various chemical tests can be employed. The key here is choosing the correct test from the given options.

• Lucas Test: This test is used to distinguish between primary, secondary, and tertiary alcohols based on their reactivity with Lucas reagent. It is not suitable for identifying phenolic groups.
• Carbylamine Test: This test is specific for primary amines and involves the formation of isocyanides (carbylamines), which are detected by their foul odor. It is not applicable to phenolic groups.
• Phthalein Test: This test is specific for phenols. It involves the reaction of phenolic compounds with phthalic anhydride in the presence of a dehydrating agent to form a colored phthalein dye, such as phenolphthalein. This is the correct test for identifying phenolic groups.
• Tollen's Test: This test is used to detect aldehydes. When a compound containing an aldehyde group is reacted with Tollen's reagent, a silver mirror forms on the inner walls of the test tube. It is not used for phenolic groups.

Conclusion: The phthalein test is specifically used to identify the presence of phenolic groups. Therefore, the correct answer is Phthalein test.