Question 1

Which of the following best describes constitutional isomerism?

Accepted Answer

Isomers that have the same molecular formula but different connectivity of atoms.

Question 2

According to VSEPR theory, what is the predicted geometry of methane ($$\mathrm{CH_4$}$$)?

Accepted Answer

$$	ext{Tetrahedral}$$

Question 3

Which of the following molecules is expected to have a net dipole moment?

Accepted Answer

$$\mathrm{CH_3Cl}$$

Question 4

Which intermolecular force is primarily responsible for the high boiling point of water ($$\mathrm{H_2O}$$)?

Accepted Answer

Hydrogen bonding

Question 5

What is the correct IUPAC name for the following structure: $$\mathrm{CH_3CH_2CH_2Br}$$?

Accepted Answer

1-bromopropane

Question 6

Which of the following is a correct Newman projection for the staggered conformation of ethane ($$\mathrm{C_2H_6}$$)?

Accepted Answer

Hydrogens on adjacent carbons are as far apart as possible.

Question 7

Which of the following statements about cyclohexane chair conformations is TRUE?

Accepted Answer

Chair conformation minimizes torsional and steric strain.

Question 8

Which functional group is present in both aldehydes and ketones?

Accepted Answer

Carbonyl group ($$\mathrm{C=O})$$

Question 9

What is the major product when 2-bromopropane reacts with aqueous sodium hydroxide ($$\mathrm{NaOH}$$)?

Accepted Answer

Propene ($$\mathrm{CH_2$=$$CHCH_3$$})$$

Question 10

Which of the following is the correct IUPAC name for the compound with the structure $$\mathrm{CH_3CH_2C\equiv CH}$$?

Accepted Answer

1-butyne

Question 11

Which of the following statements about the relative stability of alkenes is correct?

Accepted Answer

Alkenes with more alkyl substituents are more stable.

Question 12

Which of the following is a correct representation of a Lewis structure for ammonia ($$\mathrm{NH_3$}$$)?

Accepted Answer

Nitrogen with three single bonds to hydrogen and one lone pair.

Question 13

Which of the following is a correct statement about the solubility of alcohols in water?

Accepted Answer

Short-chain alcohols are soluble due to hydrogen bonding.

Question 14

Which of the following is the correct IUPAC name for the compound $$\mathrm{CH_3CH_2NH_2}$$?

Accepted Answer

Ethanamine

Question 15

Which of the following is a correct statement about the conformational analysis of propane?

Accepted Answer

The anti conformation is the most stable due to minimized steric interactions.

Question 16

Which of the following is a correct statement about cis-trans stereoisomerism in cyclohexane derivatives?

Accepted Answer

Trans isomers have substituents on opposite sides of the ring.

Question 17

Which of the following is the correct IUPAC name for the compound $$\mathrm{CH_3COOH}$$?

Accepted Answer

Ethanoic acid

Question 18

Which of the following best describes the hybridization of the central carbon in ethene ($$\mathrm{C_2H_4}$$)?

Accepted Answer

$$\mathrm{sp^2$}$$

Question 19

Which of the following is a correct statement about the physical properties of alkanes?

Accepted Answer

Alkanes have low boiling points due to weak London dispersion forces.

Question 20

Which of the following is a correct statement about the nomenclature of ethers?

Accepted Answer

Ethers are named by listing the alkyl groups attached to oxygen in alphabetical order followed by 'ether'.

Organic Chemistry: Core Concepts and Nomenclature Study Guide

Study Guide - Practice Questions