Question 1

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

Accepted Answer

An alcohol contains a hydroxyl group ($$-OH) $$bonded to a saturated carbon, while a phenol contains a hydroxyl group bonded directly to a benzene ring.

Question 2

Which of the following compounds is classified as a secondary (2°) alcohol?

Accepted Answer

$$CH_3CH(OH)CH_3$

Question 3

What is the IUPAC name for the following compound: $$CH_3CH_2CH_2SH$$?

Accepted Answer

Propanethiol

Question 4

Which of the following best explains why methanol ($$CH_3OH) is $$more soluble in water than 1-pentanol ($$CH_3CH_2CH_2CH_2CH_2OH$$)?

Accepted Answer

Methanol has a shorter nonpolar hydrocarbon chain, allowing the polar $$-OH$$ group to dominate and form hydrogen bonds with water.

Question 5

Which of the following reactions represents the oxidation of a primary alcohol?

Accepted Answer

$$RCH_2OH \xrightarrow{[O]} RCHO$$

Question 6

A sample of 2-butanol is heated with an acid catalyst. Which of the following is the major organic product?

Accepted Answer

2-Butene

Question 7

Which of the following statements about ethers is correct?

Accepted Answer

Ethers have a bent structure similar to water and are named by listing the alkyl groups in alphabetical order followed by 'ether'.

Question 8

Which of the following compounds will give a positive Tollens' test?

Accepted Answer

Benzaldehyde

Question 9

What is the product when ethanethiol ($$CH_3CH_2SH) is $$oxidized?

Accepted Answer

$$CH_3CH_2S_2CH_2CH_3$$

Question 10

Which of the following best describes the reduction of a ketone?

Accepted Answer

A ketone is reduced to a secondary alcohol by the addition of hydrogen.

Question 11

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2COCH_3$$?

Accepted Answer

2-Butanone

Question 12

A solution of glucose gives a positive Benedict's test. What does this indicate about the structure of glucose?

Accepted Answer

Glucose contains an aldehyde group with an adjacent hydroxyl group.

Question 13

Which of the following best explains why tertiary alcohols do not undergo oxidation under mild conditions?

Accepted Answer

Tertiary alcohols lack a hydrogen atom on the carbon bonded to the $$-OH$$ group, preventing oxidation.

Question 14

Which of the following is the correct common name for $$CH_3OCH_2CH_2CH_3$$?

Accepted Answer

Methyl propyl ether

Question 15

Which of the following functional groups is present in both aldehydes and ketones?

Accepted Answer

Carbonyl group ($$C=O)$$

Question 16

A patient is exposed to a gas leak and the odor is detected using a compound containing which functional group?

Accepted Answer

Thiol ($$-SH)$$

Question 17

Which of the following best describes the solubility of phenol in water?

Accepted Answer

Phenol is slightly soluble in water because it can form hydrogen bonds but also has a nonpolar aromatic ring.

Question 18

Which of the following is the correct product of the oxidation of propanal ($$CH_3CH_2CHO$$)?

Accepted Answer

$$CH_3CH_2COOH$$

Question 19

Which of the following best describes the role of a catalyst such as nickel, platinum, or palladium in the reduction of aldehydes and ketones?

Accepted Answer

The catalyst allows the addition of hydrogen to the carbonyl group, reducing it to an alcohol.

Question 20

Which of the following best explains why aldehydes are more easily oxidized than ketones?

Accepted Answer

Aldehydes have a hydrogen atom attached to the carbonyl carbon, which can be removed during oxidation.

Alcohols, Thiols, Ethers, Aldehydes, and Ketones: Structure, Nomenclature, Properties, and Reactions

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