OAT Organic Chemistry Practice Test 2023 Questions Answers

Which of the following are always considered terminal functional groups?

Which of the following does NOT show optical activity?

Within one principal quantum level of a many-electron atom, which orbital has the minimum energy?

Two atomic orbitals combine to form:

I. a bonding molecular orbital.
II. an antibonding molecular orbital.
III. new atomic orbitals

S_N1 reactions show first-order kinetics because

Treatment of ( S)-2-bromobutane with sodium hydroxide results in the production of a compound with an ( R) configuration. The reaction has most likely taken place through

What is the correct decreasing order of the boiling points of the following compounds?

I. n-hexane
II. 2-methylpentane
III. 2,2-dimethylbutane
IV. n-heptane

Which of the following products will be formed if 2- methyl-2-butene is reacted with hot basic KMnO₄ ?

Alcohols have higher boiling points than their analogous ethers and hydrocarbons because

All of the following properties are responsible for the reactivity of the carbonyl bond in propanone EXCEPT the fact that

Heating an aldehyde with Zn in HCl produces

Which of the following molecules could be classified as a soap?

Oxidation of which of the following compounds is most likely to yield a carboxylic acid?

During the hydrolysis of an acid chloride, pyridine (a base) is usually added to the reaction vessel. This is done because

Which of the following would be the best method of producing methyl propanoate?

A compound with the general formula R₄ N⁺ X⁻ is classified as

Amines have lower boiling points than the corresponding alcohols because

If 2-amino-3-methylbutane were treated with excess methyl iodide, silver oxide, and water, what would be the major reaction products?

If IR spectroscopy were employed to monitor the oxidation of benzyl alcohol to benzaldehyde, which of the following would provide the best evidence that the reaction was proceeding as planned?

Which of the following chemical shifts would correspond to an aldehyde proton signal in a 1 H NMR spectrum?

Mass spectroscopy results in the separation of fragments according to

UV spectroscopy is most useful for detecting

In the ¹³C NMR spectrum of methyl phenyl ketone, which carbon atom will appear the farthest downfield?

Fractional distillation would be best used to separate which of the following compounds?

Which of the following compounds would be the most effective in extracting benzoic acid from a diethyl ether solution?

pI Molecular Weight

Protein A   4.5   25,000
Protein B   6.0   10,000
Protein C   9.5   12,000

At which pH can the above proteins be separated by isoelectric focusing?

Fractional distillation would be best used to separate which of the following compounds?

Which of the following compounds would be the most effective in extracting benzoic acid from a diethyl ether solution?

When a solution of 4-t-butylcyclohexanone is treated with two equivalents of a strong base, followed by addition of a two-fold excess of 1-bromobutane, then quenched with water the product is

Amides can be produced by reaction of acyl halides with