Question 1

Which of the following best describes an organic compound?

Accepted Answer

A compound that contains carbon and hydrogen, often with other elements such as oxygen, nitrogen, or sulfur.

Question 2

Which of the following is the correct condensed structural formula for propane?

Accepted Answer

$$\mathrm{CH_3CH_2CH_3}$$

Question 3

Which functional group is present in the structure of acetaminophen (Tylenol)?

Accepted Answer

Phenol

Question 4

Given the molecular formula $$\mathrm{C_5H_{12}}$$, what is the correct IUPAC name for the straight-chain alkane?

Accepted Answer

Pentane

Question 5

Which of the following best describes the difference between isopropyl alcohol and n-propyl alcohol?

Accepted Answer

Isopropyl alcohol has the hydroxyl group on the middle carbon, while n-propyl alcohol has it on the end carbon.

Question 6

Which of the following is the correct skeletal structure for hexane?

Accepted Answer

A zig-zag line with six carbon atoms and no branches.

Question 7

Which of the following statements about alkanes is TRUE?

Accepted Answer

Alkanes are nonpolar and contain only single bonds between carbon atoms.

Question 8

A compound has the following structure: $$\mathrm{CH_3CH_2CH_2CH_2CH_3}. $$What is its IUPAC name?

Accepted Answer

Pentane

Question 9

Which of the following functional groups is present in aspirin?

Accepted Answer

Carboxylic acid

Question 10

Which of the following is the correct IUPAC name for a cycloalkane with six carbon atoms?

Accepted Answer

Cyclohexane

Question 11

Which of the following best describes the structure of benzene?

Accepted Answer

A six-membered ring with alternating double bonds, often represented as a hexagon with a circle inside.

Question 12

Which of the following is a correct example of a saturated hydrocarbon?

Accepted Answer

Octane ($$\mathrm{C_8H_{18}})$$

Question 13

Which of the following is the correct order for naming a branched-chain alkane according to IUPAC rules?

Accepted Answer

Substituents + Parent Name + Suffix

Question 14

Which of the following best describes a terpene?

Accepted Answer

A compound containing one or more alkene functional groups, often found in plants.

Question 15

Which of the following is the correct molecular formula for cyclopentane?

Accepted Answer

$$\mathrm{C_5H_{10}}$$

Question 16

Which of the following is a correct example of a polyunsaturated fatty acid?

Accepted Answer

A fatty acid with two or more double bonds in its hydrocarbon chain.

Question 17

Which of the following is the correct condensed structure for isopropyl alcohol?

Accepted Answer

$$\mathrm{CH_3CH(OH)CH_3$}$$

Question 18

Which of the following best describes the functional group present in the structure below?

$$\mathrm{CH_3CONHCH_3}$$

Accepted Answer

Amide

Question 19

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

$$\mathrm{CH_3CH_2CH_2CH_2CH_2CH_3}$$

Accepted Answer

Hexane

Question 20

Which of the following statements about pharmaceuticals such as aspirin, ibuprofen, and naproxen is TRUE?

Accepted Answer

They are all organic compounds containing functional groups such as carboxylic acids and aromatics.

Introduction to Organic Compounds: Structure, Nomenclature, and Functional Groups

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