Practice MCQ For Govt Pharmacist Exam, in this article we will solve, Practice MCQ on the topic, alcohols under the subject Pharmaceutical organic chemistry of second semester. Read following article for your reference.
Which functional group characterizes alcohols?
A) Carbonyl group
B) Hydroxyl group
C) Carboxyl group
D) Ester group
What color change occurs when phenols react with Fe³⁺ ions?
A) Red
B) Blue
C) Yellow
D) No color change
Which alcohol is commonly known as wood alcohol?
A) Ethanol
B) Methanol
C) Butanol
D) Propanol
Which alcohol readily oxidizes with aqueous KMnO₄ to form an aldehyde followed by a carboxylic acid?
A) Primary alcohol
B) Secondary alcohol
C) Tertiary alcohol
D) Phenol
What is the IUPAC name for CH₃CH₂OH?
A) Ethanol
B) Methanol
C) Propanol
D) Butanol
Which test forms a strong colored complex with Fe³⁺ for phenols?
A) Chromic acid test
B) Lucas test
C) Iodoform test
D) Phenol-Fe³⁺ test
Which alcohol does not react easily with aqueous KMnO₄?
A) Primary alcohol
B) Secondary alcohol
C) Tertiary alcohol
D) Phenol
What type of alcohols are soluble in water due to hydrogen bonding?
A) Short-chain alcohols
B) Long-chain alcohols
C) Aromatic alcohols
D) All alcohols
Which alcohol is commonly found in alcoholic beverages?
A) Methanol
B) Ethanol
C) Propanol
D) Butanol
What is the product when primary alcohols react with aqueous KMnO₄?
A) Aldehyde
B) Ketone
C) Carboxylic acid
D) MnO₂
Which alcohol is commonly found in alcoholic beverages?
A) Ethanol
B) Methanol
C) Propanol
D) Butanol
What is the IUPAC name for CH₃OH?
A) Methanol
B) Ethanol
C) Propanol
D) Butanol
Which alcohol has an extra methylene (CH₂) unit compared to methanol?
A) Ethanol
B) Propanol
C) Butanol
D) Isopropyl alcohol
Which alcohol is used as an antifreeze and fuel additive?
A) Ethanol
B) Methanol
C) Propanol
D) Butanol
What is the common name for ethylene glycol?
A) Ethanol
B) Methanol
C) Glycerol
D) Antifreeze
Which alcohol is used as a solvent, antiseptic, and chemical precursor?
A) Ethanol
B) Methanol
C) Propanol
D) Butanol
What is the primary use of chlorobutanol (trichloro-2-methyl-2-propanol)?
A) Antifungal agent
B) Flavor enhancer
C) Antiseptic
D) Antioxidant
Which compound is formed by the simple nucleophilic addition of chloroform and acetone?
A) Chloral hydrate
B) Chlorobutanol
C) Chloroform
D) Chloral
What type of alcohol is cetostearyl alcohol primarily composed of?
A) Fatty alcohols
B) Aromatic alcohols
C) Phenolic alcohols
D) Secondary alcohols
How is cetostearyl alcohol commonly obtained?
A) By fermentation
B) By chemical synthesis
C) By extraction from seaweed
D) By distillation of wood
What is the primary function of cetostearyl alcohol in cosmetic formulations?
A) Emulsifier
B) Fragrance enhancer
C) pH adjuster
D) Antioxidant
Which of the following is NOT a common use of cetostearyl alcohol?
A) Skin moisturizer
B) Hair conditioner
C) Lip balm
D) Fuel additive
What is the IUPAC name for the compound C₆H₅CH₂OH?
A) Phenyl methanol
B) Benzyl alcohol
C) Ethyl alcohol
D) Toluene
Which of the following is a common use of benzyl alcohol?
A) Antifreeze
B) Food flavoring
C) Solvent for epoxy resin coatings
D) Hair conditioner
Glycerol (glycerin) is commonly used in which of the following applications?
A) Fuel additive
B) Moisturizer
C) Antiseptic
D) Flavor enhancer
What is the chemical formula for propylene glycol?
A) C₃H₈O₃
B) C₄H₁₀O₂
C) C₆H₅CH₂OH
D) C₃H₈O₂
Which alcohol is used as an antifreeze and in hydraulic fluids?
A) Benzyl alcohol
B) Glycerol
C) Ethanol
D) Propylene glycol
What is the primary function of glycerol in cosmetic formulations?
A) Emulsifier
B) Flavor enhancer
C) pH adjuster
D) Antioxidant
Which alcohol is naturally found in essential oils from jasmine and ylang-ylang?
A) Benzyl alcohol
B) Glycerol
C) Ethanol
D) Methanol
What role does glycerol play in biochemical processes?
A) Energy carrier
B) Precursor for esters
C) Component of cell membranes
D) Antifungal agent
Which alcohol is used in electronic cigarettes to enhance flavor?
A) Benzyl alcohol
B) Glycerol
C) Ethanol
D) Propylene glycol
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