Question 1

Which of the following compounds is classified as an aromatic hydrocarbon according to Huckel’s Rule?

Accepted Answer

Benzene

Question 2

What is the correct IUPAC name for the compound with the formula $CH_3CH_2CH_2CH_3$?

Accepted Answer

Butane

Question 3

Which functional group is present in all alcohols?

Accepted Answer

$-OH$

Question 4

A compound with the formula $CH_3CH_2C\equiv CH$ is best classified as:

Accepted Answer

An alkyne

Question 5

Which of the following statements about cycloalkanes is TRUE?

Accepted Answer

Cycloalkanes are composed of $sp^3$ hybridized carbons forming a ring.

Question 6

Which compound contains a carbonyl group bonded to two alkyl groups?

Accepted Answer

Ketone

Question 7

What is the functional group present in carboxylic acids?

Accepted Answer

$-COOH$

Question 8

Which of the following is the correct structure for propene?

Accepted Answer

$CH_2=CHCH_3$

Question 9

Which compound is an example of a nitrile?

Accepted Answer

Acetonitrile ($CH_3CN$)

Question 10

A student is given a compound with the formula $CH_3CH_2OCH_3$. Which class does this compound belong to?

Accepted Answer

Ether

Question 11

Which of the following is a carboxylic acid derivative that contains a nitrogen atom attached to the carbonyl group?

Accepted Answer

Amide

Question 12

Which of the following best describes the difference between an aldehyde and a ketone?

Accepted Answer

Aldehydes have one alkyl group and one hydrogen attached to the carbonyl carbon, while ketones have two alkyl groups.

Question 13

Which of the following compounds contains a triple bond?

Accepted Answer

But-1-yne

Question 14

Which of the following is the correct condensed formula for ethylbenzene?

Accepted Answer

$C_6H_5CH_2CH_3$

Question 15

A compound is found to contain only carbon and hydrogen, with a molecular formula $C_5H_{10}$. Which class of hydrocarbons could this compound belong to?

Accepted Answer

Cycloalkane

Question 16

Which of the following is the correct IUPAC name for $CH_3CH_2CH_2OH$?

Accepted Answer

Propan-1-ol

Question 17

Which of the following is a correct statement about esters?

Accepted Answer

Esters are carboxylic acid derivatives containing a carbonyl group bonded to an oxygen atom.

Question 18

Which of the following compounds is an amine?

Accepted Answer

$CH_3NH_2$

Question 19

A patient is exposed to a solvent containing $CH_3CH_2OCH_2CH_3$. Which class of organic compound is this, and what is a common use for it?

Accepted Answer

Ether; commonly used as an anesthetic

Question 20

Which of the following is the correct structure for but-2-ene?

Accepted Answer

$CH_3CH=CHCH_3$

Classes of Organic Compounds: Functional Groups and Nomenclature

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