Chemistry Test Organic Chemistry 3

Question 1

Which reaction mechanism involves formation of a carbocation intermediate followed by attack of a nucleophile?

Accepted Answer

SN1

Answer

SN2

Answer

E2

Answer

Radical addition

Question 2

In Markovnikov addition of HBr to propene, which carbon receives the bromine?

Accepted Answer

C-2 (internal carbon)

Answer

C-1 (terminal carbon)

Answer

Both carbons equally

Answer

Neither; Br adds to H

Question 3

Which functional group is characterized by a carbonyl carbon bonded to an —OH group?

Accepted Answer

Carboxylic acid

Answer

Aldehyde

Answer

Ketone

Answer

Ester

Question 4

What is the product of catalytic hydrogenation of an alkyne using a Lindlar catalyst?

Accepted Answer

Cis-alkene

Answer

Alkane

Answer

Trans-alkene

Answer

Cycloalkane

Question 5

A compound has a molecular formula of C₆H₁₂. How many degrees of unsaturation (index of hydrogen deficiency) does it have?

Accepted Answer

1

Answer

0

Answer

2

Answer

3

Question 6

Which of the following amino acids contains a sulfur atom in its side chain?

Accepted Answer

Cysteine

Answer

Glycine

Answer

Alanine

Answer

Valine

Question 7

What type of reaction forms a peptide bond?

Accepted Answer

Nucleophilic acyl substitution

Answer

Aldol condensation

Answer

Electrophilic addition

Answer

Radical chain reaction