Question 1

Which of the following statements correctly describes the difference between an alcohol and a phenol?

Accepted Answer

Alcohols have an -OH group attached to a saturated carbon atom, while phenols have an -OH group attached directly to a benzene ring.

Question 2

Which compound is classified as a thiol?

Accepted Answer

CH_3SH

Question 3

What is the IUPAC name for the following structure: $CH_3CH_2CH_2OH$?

Accepted Answer

Propanol

Question 4

Which of the following best explains why alcohols generally have higher boiling points than ethers of similar molar mass?

Accepted Answer

Alcohols can form hydrogen bonds between molecules, while ethers cannot.

Question 5

Which of the following alcohols is most soluble in water?

Accepted Answer

Methanol

Question 6

What is the major product when 2-butanol undergoes dehydration with acid and heat?

Accepted Answer

$CH_3CH=CHCH_3$

Question 7

Which of the following is the correct oxidation product of a primary alcohol?

Accepted Answer

Aldehyde

Question 8

Which of the following reactions represents the oxidation of a thiol?

Accepted Answer

$2RSH \rightarrow RSSR + 2H^+$

Question 9

Which compound would have the highest boiling point: methanol, ethanol, or dimethyl ether?

Accepted Answer

Methanol

Question 10

Which of the following is the correct IUPAC name for the compound with the structure $CH_3CH_2OCH_3$?

Accepted Answer

Methoxyethane

Question 11

Which of the following statements about phenol is true?

Accepted Answer

Phenol has a high boiling point because of hydrogen bonding between molecules.

Question 12

Which of the following is a correct product of the oxidation of ethanol in the human body?

Accepted Answer

Acetaldehyde

Question 13

Which of the following best describes the role of disulfide bonds in hair protein structure?

Accepted Answer

Disulfide bonds cross-link protein chains, affecting hair shape and strength.

Question 14

Which of the following is the correct condensed structural formula for 2-methyl-2-propanol?

Accepted Answer

$(CH_3)_3COH$

Question 15

Which of the following is a common use of ethylene glycol?

Accepted Answer

As antifreeze in car cooling systems

Question 16

Which of the following is the correct IUPAC name for the compound with the structure $C_6H_5OCH_3$?

Accepted Answer

Methoxybenzene

Question 17

Which of the following alcohols is classified as a tertiary alcohol?

Accepted Answer

$(CH_3)_3COH$

Question 18

Which of the following is the correct product when 1-butanol is oxidized?

Accepted Answer

Butanal

Question 19

Which of the following is a correct statement about ethers?

Accepted Answer

Ethers have lower boiling points than alcohols of similar molar mass.

Question 20

Which of the following is the correct reaction for the combustion of ethanol?

Accepted Answer

$C_2H_5OH + 3O_2 \rightarrow 2CO_2 + 3H_2O$

Alcohols, Phenols, Thiols, and Ethers: Structure, Properties, and Nomenclature

Study Guide - Practice Questions