Test Bank For Organic Chemistry 6th Edition By Smith

Description

Test Bank For Organic Chemistry 6th Edition By Smith

Chapter 6 Understanding Organic Reactions

1) Which of the following statements about substitution reactions is true?
A) Substitution reactions involve π bonds.
B) Substitution reactions involve σ bonds.
C) One σ bond breaks and another forms at a different carbon atom.
D) One π bond breaks and another forms at the same carbon atom.

2) What kind of reaction does the conversion of A to B represent?

A) Addition reaction
B) Substitution reaction
C) Elimination reaction
D) Acid-base reaction

3) Which of the following statements about elimination reactions is true?
A) Two σ bonds are broken.
B) Two σ bonds are formed.
C) Two π bonds are broken.
D) Two π bonds are formed.

4) What kind of reaction does the conversion of A to B represent?

A) Addition reaction
B) Elimination reaction
C) Substitution reaction
D) Oxidation-reduction reaction

5) Which of the following statements about addition reactions is true?
A) Two π bonds are formed.
B) Two π bonds are broken.
C) Two σ bonds are formed.
D) One π bond is formed.

6) What kind of reaction does the conversion of A to B represent?

A) Acid-base reaction
B) Elimination reaction
C) Substitution reaction
D) Addition reaction

7) Which of the following statements about bond breaking is true?
A) Homolysis and heterolysis require energy.
B) In homolysis, the electrons in the bond are divided unequally.
C) In heterolysis, the electrons in the bond are divided equally.
D) Homolysis generates charged intermediates.

8) Which of the following statements about bond breaking is not true?
A) Homolysis generates uncharged reactive intermediates with unpaired electrons.
B) Homolysis require energy but heterolysis does not require energy.
C) Heterolysis generates charged intermediates.
D) Heterolysis involves unequal sharing of bonding electrons by atoms.

9) Which of the following statements is true?
A) Ionic intermediates are formed in radical reactions.
B) Radicals are intermediates in polar reactions.
C) Carbocations are electrophiles.
D) Radicals are nucleophiles.

10) Which of the following statements is not true?
A) In polar reactions, a nucleophile reacts with an electrophile.
B) Carbocations are electrophiles.
C) Carbanions are nucleophiles.
D) A half-headed curved arrow shows the movement of an electron pair.