Oxidation of a 1° alcohol with pyridinium chlorochromate results in the production of ________.

A) an ester
B) a ketone
C) an aldehyde
D) an ether
E) none of the above

The twisted boat conformation of cyclohexane is actually a slightly lower energy conformation than the boat conformation. Which of the following accurately describes one factor involved in this structural behavior?

A) lower angle strain in the boat
B) higher torsional strain in the twisted boat
C) fewer unfavorable steric factors in the twisted boat
D) increased rotational freedom in the boat
E) lower bond strain in the boat

Which of the following statements about π molecular orbitals is/are correct?

A) π molecular orbitals are cylindrically symmetric.
B) Most of the electron density in a π molecular orbital is centered above and below the internuclear axis.
C) When two atoms are connected by a double bond, both of these bonds are π bonds.
D) Both statements B and C are correct.
E) Statements A, B, and C are all correct.

When an arenediazonium ion reacts with an activated aromatic ring, the product is ________.

A) an azo compound
B) a nitrosamine
C) an aniline
D) a benzonitrile

Which of the following compounds would reduce a disulfide linkage in a peptide?

A) urea
B) concentrated NaOH
C) dithiothreitol
D) dilute HCl
E) bromine