Question 1

Refer to the first image. How many methyl groups are present in the compound shown?

Accepted Answer

3

Question 2

In the second image, the circled carbons are highlighted. What type of carbon atoms are these?

Accepted Answer

Secondary carbons

Question 3

Which of the following best describes the structure in the third image?

Accepted Answer

A tricyclic alkane with three methyl substituents

Question 4

The fourth image shows a branched alkane. What is the IUPAC name of this compound?

Accepted Answer

3-ethyl-2,2,4,4-tetramethylpentane

Question 5

The fifth image shows a branched alkane. Which of the following is the correct IUPAC name?

Accepted Answer

3-ethyl-2-methylheptane

Question 6

The sixth image shows a cyclohexane derivative. What is the correct IUPAC name for this compound?

Accepted Answer

1,3-dimethyl-4-pentylcyclohexane

Question 7

The seventh image shows a cyclopentyl-substituted alkane. Which of the following is the correct IUPAC name?

Accepted Answer

1-cyclopentyl-2-ethyl-3,3-dimethylbutane

Question 8

The eighth image shows a branched alcohol. What is the common name for this compound?

Accepted Answer

tert-pentyl alcohol

Question 9

For the compound in the first image, how many secondary carbons are present?

Accepted Answer

9

Question 10

In the structure shown in the sixth image, which carbon is a quaternary carbon?

Accepted Answer

The carbon bonded to two methyl groups and two ring carbons

Identifying Secondary Carbons in a Fused Ring System

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