Acidity of Alcohols and Phenols

Q. Which one is the most acidic compound?

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Q.

When benzene sulphonic acid and p-nitrophenol is treated with NaHCO₃, the gases released respectively are:

1. SO_{2 ,} NO₂

2. CO₂, CO₂

3. SO₂, CO₂

4. SO₂, NO

Q.

Which of the following will maximum pKa value?

1. o-nitrophenol
2. Phenol
3. o-cresol
4. ethanol

Q.

The ionisation constant of phenol is higher than that of ethanol because

1. Phenoxide ion is bulkier than ethoxide

2. Phenoxide ion is stronger base than ethoxide

3. Phenoxide ion is stabilised through delocalisation

4. Phenoxide ion is less stable than ethoxide

Q.

The Increasing Order of acidic Strength of the following is

1. (i) < (ii) < (iii)

2. (iii) < (ii) < (i)

3. (ii) < (iii) < (i)

4. (i) < (iii) < (ii)

Q. Which of the following will not react with $NaOH?$

1. C₂H₅OH
2. CH₃CONH₂
3. 
4. CH(CN)₃

Q. Which among the following alcohols is most reactive with sodium wire?

1. Ethanol
2. 2 – propanol
3. 2 – Methyl – 2 – butanol
4. Na metal

Q.

Which Statement is incorrect?

1. Phenol liberates Co₂ from NaHCo₃ Solution

2. Phenol is Weak acid

3. Phenol is an aromatic compound

4. Phenol is Soluble in NaOH.

Q.

ClCH₂CH₂OH is stronger acid than CH₃CH₂OH because of:

1. -I effect of Cl increases -ve charge on O atom of alcohol

2. -I effect of Cl disperses -ve charge on O atom to produce more stable cation

3. -I effect of Cl disperses -ve charge on O atom to produce more stable anion

4. None of these

Q.

Which of the following compounds decomposes NaHCO₃ solution?

1. 2- nitrophenol

2. Methoxy phenol

3. 2, 4, 6 - trinitro phenol

4. Phenol