Question 1

Which of the following compounds contains a carbonyl group bonded to at least one hydrogen atom?

Accepted Answer

Formaldehyde

Question 2

A compound with the formula CH3CH2CHO is best classified as which of the following?

Accepted Answer

An aldehyde

Question 3

Which IUPAC name corresponds to the common name 'acetone'?

Accepted Answer

Propanone

Question 4

A chemist isolates a compound with the structure CH3CH2COCH3. What is the correct IUPAC name for this compound?

Accepted Answer

2-Butanone

Question 5

Which of the following best describes the functional group present in carboxylic acids?

Accepted Answer

A carbonyl group bonded to a hydroxyl group

Question 6

A compound is named 2-methylpropanal according to IUPAC rules. What is its common name?

Accepted Answer

Isobutyraldehyde

Question 7

Which of the following correctly matches the number of carbons with its common name prefix?

Accepted Answer

4 carbons – Butyr-

Question 8

A molecule is named 'formylcyclohexane.' What functional group is present as a substituent?

Accepted Answer

An aldehyde group

Question 9

Which of the following best explains why ketones cannot be oxidized to carboxylic acids under mild conditions, while aldehydes can?

Accepted Answer

Ketones lack a hydrogen atom bonded to the carbonyl carbon

Question 10

A patient is exposed to formaldehyde in a laboratory accident. Which of the following is the correct IUPAC name for the compound involved?

Accepted Answer

Methanal

Question 11

Which of the following compounds would be named using the suffix '-one' according to IUPAC nomenclature?

Accepted Answer

CH3COCH3

Question 12

A compound is named 'pentanal' by IUPAC rules. What is its molecular formula?

Accepted Answer

C5H10O

Question 13

Which of the following is the correct IUPAC name for the compound with the formula CH3CH2CH(CH3)CHO?

Accepted Answer

2-Methylbutanal

Question 14

A student is asked to name a compound with the structure CH3CH2COOH. Which of the following is the correct IUPAC name?

Accepted Answer

Propanoic acid

Question 15

Which of the following best describes the difference between the prefixes 'formyl-' and 'keto-' in organic nomenclature?

Accepted Answer

'Formyl-' refers to an aldehyde substituent, while 'keto-' refers to a ketone substituent.

Question 16

A compound is named 'butanal' by IUPAC rules. Which of the following is its common name?

Accepted Answer

Butyraldehyde

Question 17

Which of the following statements about the nomenclature of carboxylic acids is correct?

Accepted Answer

The suffix '-oic acid' is used in IUPAC names.

Question 18

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

Accepted Answer

A carbonyl group bonded to two carbon atoms

Question 19

A chemist wants to name a compound with the formula CH3CH2CH2CH2CHO. What is the correct IUPAC name?

Accepted Answer

Pentanal

Question 20

Which of the following is the correct IUPAC name for the compound commonly known as 'propionaldehyde'?

Accepted Answer

Propanal

Aldehydes, Ketones, and Carboxylic Acids: Structure, Nomenclature, and Common Names

Study Guide - Practice Questions