Question 1

Which of the following best describes a saturated hydrocarbon?

Accepted Answer

A compound containing only single bonds between carbon atoms.

Question 2

What is the general formula for a straight-chain alkane with $$n$$ carbon atoms?

Accepted Answer

$$C_nH_{2n+2}$$

Question 3

Which of the following statements about alkanes is FALSE?

Accepted Answer

Alkanes are unsaturated hydrocarbons.

Question 4

Which functional group is present in all aromatic compounds?

Accepted Answer

A benzene ring

Question 5

What is the IUPAC name for the following compound: $$C_5H_{12}$$?

Accepted Answer

Pentane

Question 6

Which of the following is a correct statement about structural isomers?

Accepted Answer

They have the same molecular formula but different connectivity of atoms.

Question 7

A compound with the formula $$C_4H_8$$ could be which of the following?

Accepted Answer

Cyclobutane

Question 8

Which of the following best describes a chiral center in an organic molecule?

Accepted Answer

A carbon atom bonded to four different groups.

Question 9

Which of the following is a property of cis–trans isomers in alkenes?

Accepted Answer

They have restricted rotation around the double bond.

Question 10

Which of the following is a correct IUPAC name for a branched-chain alkane with the formula $$C_5H_{12}$$?

Accepted Answer

2-Methylbutane

Question 11

Which of the following statements about fatty acids is TRUE?

Accepted Answer

Saturated fatty acids contain only single bonds between carbon atoms.

Question 12

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

Accepted Answer

$$CH_3CH_2CH_2CH_3$$

Question 13

Which of the following is a correct description of a conformational isomer?

Accepted Answer

Different spatial arrangements of the same molecule due to rotation around single bonds.

Question 14

Which of the following is a correct IUPAC name for a haloalkane?

Accepted Answer

2-Chloropropane

Question 15

Which of the following best explains why alkanes are insoluble in water?

Accepted Answer

Alkanes are nonpolar and water is polar.

Question 16

Which of the following is a real-world consequence of chirality in pharmaceuticals?

Accepted Answer

One enantiomer of a drug can be beneficial while the other can be harmful.

Question 17

Which of the following is the correct IUPAC name for a six-carbon ring alkane?

Accepted Answer

Cyclohexane

Question 18

Which of the following is a property of aromatic compounds?

Accepted Answer

They have delocalized electrons shared among the ring carbons.

Question 19

Which of the following is a correct statement about the combustion of alkanes?

Accepted Answer

The products are always $$CO_2$$ and $$H_2O$$ when combustion is complete.

Question 20

Which of the following best describes the use of the letter 'R' in organic chemistry?

Accepted Answer

It represents the rest of the molecule bonded through carbon.

Chapter 4: Introduction to Organic Compounds – GOB Chemistry Study Notes

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