Question 1

Which of the following best describes the structural difference between alkanes and alkenes?

Accepted Answer

Alkanes contain only single bonds between carbon atoms, while alkenes contain at least one double bond between carbon atoms.

Question 2

Which of the following is the correct IUPAC name for the compound with the formula $$ \mathrm{CH_3CH_2CH_2OH} $$?

Accepted Answer

Propanol

Question 3

Which functional group is present in all amino acids?

Accepted Answer

Both an amino group ($$ \mathrm{-NH_2$} ) $$and a carboxyl group ($$ \mathrm{-COOH} )$$

Question 4

Which of the following statements about benzene is correct?

Accepted Answer

Benzene exhibits resonance, meaning its electrons are delocalized over the ring structure.

Question 5

What is the product when ethene ($$ \mathrm{C_2H_4} ) $$undergoes hydration?

Accepted Answer

Ethanol ($$ \mathrm{C_2H_5OH} )$$

Question 6

Which of the following best explains why long-chain carboxylic acids are less soluble in water than short-chain carboxylic acids?

Accepted Answer

The long non-polar hydrocarbon chain reduces overall solubility in water.

Question 7

Which reaction represents the formation of an ester?

Accepted Answer

$$ \mathrm{Carboxylic\ acid + Alcohol \rightarrow Ester + Water} $$

Question 8

Which of the following is a correct example of a geometric (cis/trans) isomer?

Accepted Answer

2-butene ($$ \mathrm{CH_3CH=$$CHCH_3$$} ) $$can exist as both cis and trans isomers.

Question 9

Which of the following statements about the oxidation of alcohols is correct?

Accepted Answer

Primary alcohols can be oxidized to aldehydes and then to carboxylic acids.

Question 10

Which of the following best describes the formation of a peptide bond?

Accepted Answer

A condensation reaction between the amino group of one amino acid and the carboxyl group of another.

Question 11

Which of the following is a primary alcohol?

Accepted Answer

$$ \mathrm{CH_3CH_2OH}  ($$ethanol)

Question 12

Which of the following best explains why hydrocarbons are commonly used as fuels?

Accepted Answer

They have high energy content due to their non-polar C-H and C-C bonds.

Question 13

Which of the following is a correct representation of the hydration of an alkene?

Accepted Answer

$$ \mathrm{CH_2$=CH_2$ + H_2O \rightarrow CH_3CH_2OH} $$

Question 14

Which of the following statements about ethers is correct?

Accepted Answer

Ethers can be formed by the condensation of two alcohol molecules.

Question 15

Which of the following is a structural isomer of butanol ($$ \mathrm{C_4H_{10}O} $$)?

Accepted Answer

Diethyl ether ($$ \mathrm{CH_3CH_2OCH_2CH_3} )$$

Question 16

Which of the following best describes the hydrophilic and hydrophobic parts of a phospholipid?

Accepted Answer

The phosphate head is hydrophilic, and the fatty acid tails are hydrophobic.

Question 17

Which of the following is a correct example of a condensation reaction in biological systems?

Accepted Answer

Formation of a peptide bond between two amino acids.

Question 18

Which of the following best describes the difference between a primary, secondary, and tertiary amine?

Accepted Answer

A primary amine has one alkyl group attached to the nitrogen, a secondary has two, and a tertiary has three.

Question 19

Which of the following is a correct sequence in the oxidation of ethanol in the human body?

Accepted Answer

$$ \mathrm{Ethanol \rightarrow Acetaldehyde \rightarrow Acetic\ acid \rightarrow CO_2$} $$

Course Outline and Study Guide: Organic and Biological Chemistry (CHM1003)

Guida di studio - Domande di pratica