Monthly Student Online Competition

Phenols Acidity MDCAT MCQs with Answers

Welcome to the Phenols Acidity MDCAT MCQs with Answers. In this post, we have shared Phenols Acidity Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Chemistry offers a chance to enhance your knowledge regarding Phenols Acidity MCQs in this MDCAT Online Test.

The acidity of phenol is increased by:
a) Electron-donating groups
b) Electron-withdrawing groups
c) Alkyl groups
d) Aromatic groups

Answer
b

Phenol is more acidic than:
a) Ethanol
b) Methanol
c) Water
d) Acetic acid

Answer
a

Which of the following phenols is the most acidic?
a) Phenol
b) 2-Nitrophenol
c) 4-Nitrophenol
d) 2,4,6-Trinitrophenol

Answer
d

The presence of a hydroxyl group on the benzene ring:
a) Increases acidity
b) Decreases acidity
c) Has no effect on acidity
d) Makes phenol neutral

Answer
a

The acidity of phenol is decreased by:
a) Electron-withdrawing groups
b) Electron-donating groups
c) Halogen groups
d) Nitro groups

Answer
b

Which of the following substituents decreases the acidity of phenol the most?
a) -OH
b) -NO₂
c) -CH₃
d) -Cl

Answer
c

The acidity of phenol compared to alcohols is due to:
a) Delocalization of negative charge
b) Formation of phenoxide ion
c) Hydrogen bonding
d) Molecular weight

Answer
b

Which of the following phenols is the least acidic?
a) 2-Nitrophenol
b) 4-Nitrophenol
c) Phenol
d) 2,4-Dimethylphenol

Answer
d

The acidity of phenol is higher than:
a) Ethyl alcohol
b) Isopropyl alcohol
c) Water
d) Methanol

Answer
a

The pKa value of phenol is approximately:
a) 9.9
b) 7.0
c) 4.0
d) 10.0

Answer
a

In phenol, the -OH group is:
a) An electron-withdrawing group
b) An electron-donating group
c) Neutral
d) A strong acid

Answer
b

The acidity of phenol is greater than that of:
a) Toluene
b) Benzene
c) Aniline
d) Chlorobenzene

Answer
c

Which of the following groups when attached to phenol increases its acidity?
a) -CH₃
b) -OCH₃
c) -NO₂
d) -NH₂

Answer
c

The phenoxide ion is stabilized by:
a) Inductive effect
b) Resonance effect
c) Hydrogen bonding
d) Van der Waals forces

Answer
b

Phenol is more acidic than:
a) Benzyl alcohol
b) Cyclohexanol
c) Isopropanol
d) 1-Butanol

Answer
a

The acidity of phenol increases with:
a) Electron-donating groups
b) Electron-withdrawing groups
c) Alkyl groups
d) Halogens

Answer
b

The effect of the -OH group on the phenol ring is:
a) Decreases acidity
b) Increases acidity
c) No effect on acidity
d) Neutralizes the phenol

Answer
b

Phenol reacts with sodium hydroxide to form:
a) Sodium phenoxide
b) Sodium benzoate
c) Sodium acetate
d) Sodium alcohol

Answer
a

The acidity of phenol is influenced by:
a) Substituents on the ring
b) Molecular weight
c) Atomic size
d) Hydrogen bonding

Answer
a

The pKa of phenol is approximately:
a) 9.9
b) 7.4
c) 10.5
d) 6.3

Answer
a

The acidity of phenol increases when:
a) Electron-donating groups are present
b) Electron-withdrawing groups are present
c) Alkyl groups are present
d) No substituents are present

Answer
b

Which of the following phenols has the highest acidity?
a) Phenol
b) 2-Nitrophenol
c) 4-Nitrophenol
d) 2,4-Dimethylphenol

Answer
b

The acidity of phenol is greater than that of:
a) Alcohol
b) Aldehyde
c) Ketone
d) Ether

Answer
a

In phenol, which group has a deactivating effect on the ring, thus increasing acidity?
a) -OH
b) -CH₃
c) -NO₂
d) -Cl

Answer
c

Phenol’s acidity compared to alcohols is due to:
a) Electron-withdrawing effect
b) Resonance stabilization
c) Steric hindrance
d) Hydrogen bonding

Answer
b

The acidity of phenol compared to carboxylic acids is:
a) Higher
b) Lower
c) Equal
d) Cannot be compared

Answer
b

Phenol is more acidic than:
a) Methanol
b) Ethanol
c) Butanol
d) Water

Answer
a

The phenoxide ion is stabilized by:
a) Inductive effect
b) Resonance effect
c) Hydrogen bonding
d) Van der Waals forces

Answer
b

The acidity of phenol increases with:
a) Electron-donating groups
b) Electron-withdrawing groups
c) Alkyl groups
d) Halogens

Answer
b

Phenol in the presence of which group is most acidic?
a) -NO₂
b) -CH₃
c) -OCH₃
d) -NH₂

Answer
a

Phenol has a pKa value around:
a) 9.9
b) 4.0
c) 7.4
d) 10.0

Answer
a

The acidity of phenol increases with:
a) The presence of electron-donating groups
b) The presence of electron-withdrawing groups
c) Addition of alkyl groups
d) Addition of halogens

Answer
b

Phenol is more acidic than:
a) Cyclohexanol
b) Ethanol
c) Methanol
d) Tert-butyl alcohol

Answer
a

In phenol, an -OH group is considered:
a) A weak acid
b) A strong acid
c) Neutral
d) An electron donor

Answer
a

The acidity of phenol is increased by:
a) Substituents that withdraw electrons
b) Substituents that donate electrons
c) Alkyl substituents
d) Halogen substituents

Answer
a

Phenol reacts with which of the following to form phenoxide ion?
a) Sodium hydroxide
b) Sodium bicarbonate
c) Sodium chloride
d) Sodium carbonate

Answer
a

The acidity of phenol is affected by:
a) The nature of substituents on the ring
b) The presence of hydrogen bonds
c) The molecular weight
d) The type of solvent used

Answer
a

Phenol has a higher acidity than:
a) Primary alcohol
b) Secondary alcohol
c) Tertiary alcohol
d) All alcohols

Answer
a

Which of the following increases the acidity of phenol?
a) -NH₂ group
b) -CH₃ group
c) -NO₂ group
d) -OCH₃ group

Answer
c

The presence of which substituent decreases the acidity of phenol?
a) -NO₂
b) -CH₃
c) -COOH
d) -Cl

Answer
b

If you are interested to enhance your knowledge regarding PhysicsChemistryComputer, and Biology please click on the link of each category, you will be redirected to dedicated website for each category.

Was this article helpful?
YesNo
See Also  Inheritance Of Single Trait MDCAT MCQs with Answers
Facebook
Twitter
LinkedIn
WhatsApp
Pinterest
Telegram
Picture of YFP

YFP

YFP empower the youth with the ability to nurture their communication and leadership skills at a common national platform resulting in greater self-confidence and personal growth.

Leave a Reply

Your email address will not be published. Required fields are marked *