Resorcinol and conc. H2SO4 in presence of phthalic anhydride produce a compound which is:

1. a dye                             

2. an antiseptic

3. an indicator                   

4. a detergent

Subtopic:  Phenols: Preparation & Properties |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Phenol is weakly acidic but does not react with NaHCO3 like carboxylic acids hence:-

1. phenol is weaker than carbonic acid

2. phenol is stronger than carbonic acid

3. phenol is stronger than carboxylic acid

4. none of the above

Subtopic:  Phenols: Preparation & Properties |
 81%
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NEET 2023 - Target Batch - Aryan Raj Singh
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An organic compound C7H8O is neither soluble in NaOH nor gives blue colour with FeCl3, is:

(1) C6H5.CH2OH                 

(2) C6H4<OHCH3

(3) C6H5.OCH3                   

(4) none of these

Subtopic:  Ethers: Preparation & Properties, Uses |
 67%
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NEET 2023 - Target Batch - Aryan Raj Singh
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The electrophile involved in the above reaction is:
1. dichloromethyl cation (CHCl2)
2. dichlorocarbene (:CCl2)
3. trichloromethyl anion (CCl3)
4. formyl cation (CHO)

Subtopic:  Phenols: Preparation & Properties |
 81%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following reagents may be used to distinguish between phenol and benzoic acid?

1. Aqueous NaOH

2. Tollens reagent

3. Molisch reagent

4. Neutral FeCl3

Subtopic:  Phenols: Preparation & Properties |
 68%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In the given transformation, which of the following is the most appropriate reagent ?

(1) Zn-Hg/HCl

(2) Na, Liq. NH3

(3) NaBH4

(4) NH2NH2,OH

 

Subtopic:  Alcohols: Preparation & Properties |
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NEET 2023 - Target Batch - Aryan Raj Singh
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An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts the fastest and by what mechanism:

1. secondary alcohol by SN2

2. tertiary alcohol by SN2

3. secondary alcohol by SN1

4. tertiary alcohol by SN1

Subtopic:  Alcohols: Preparation & Properties |
 76%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Sodium phenoxide when heated with CO2 under pressure at 125°C yields a product which on acetylation produces C.

The major product C would be :

(1) 

(2) 

(3) 

(4) 

Subtopic:  Phenols: Preparation & Properties |
 63%
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NEET 2023 - Target Batch - Aryan Raj Singh
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A compound with molecular formula C4H10O3 is converted by the action of acetyl chloride to a compound with molar mass 190. The original compound has: 

(1) one OH group

(2) two OH groups

(3) three OH groups

(4) no OH group

Subtopic:  Alcohols: Preparation & Properties |
 62%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Phenyl ethyl ether with concentrated hydrobromic acid on boiling yields:-

1. Phenol and ethyl bromide

2. Bromobenzene and ethanol

3. Phenol and ethane

4. Bromobenzene and ethane

Subtopic:  Ethers: Preparation & Properties, Uses |
 80%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh