Alkenes, Alkynes Reactions Test Questions & Answers Ch.21

Chapter 21: Alkenes and Alkynes: Electrophilic Addition and Pericyclic Reactions

Test Bank

Type: multiple choice question

Title: Chapter 21 Question 01

1) From the following alkenes, pick out the strongest nucleophile:

a. A

Section reference: 21.1

b. B

Section reference: 21.1

c. C

Section reference: 21.1

d. D

Section reference: 21.1

Type: multiple choice question

Title: Chapter 21 Question 02

2) Which of the following dienes is the most stable?

a. A

Section reference: 21.1, 19.1

b. B

Section reference: 21.1, 19.1

c. C

Section reference: 21.1, 19.1

d. D

Section reference: 21.1, 19.1

e. E

Section reference: 21.1, 19.1

Type: multiple choice question

Title: Chapter 21 Question 03

3) For the following transformation, pick a suitable reagent from A-E:

a. A

Section reference: 21.2

b. B

Section reference: 21.2

c. C

Section reference: 21.2

d. D

Section reference: 21.2

e. E

Section reference: 21.2

Type: multiple choice question

Title: Chapter 21 Question 06

4) For the following transformation, pick a suitable reagent(s) from A-E:

A: Br₂

B: HBr

C: HBr, ROOR

D: Br₂, hv

E: NaBr

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple response question

Title: Chapter 21 Question 04

5) From the following reactions, A-D, pick out those which lead to the formation of pent-1-yne. Please select all that apply.

a. A

Section reference: 21.2

b. B

Section reference: 21.2

c. C

Section reference: 21.2

d. D

Section reference: 21.2

Type: matching question

Title: Chapter 21 Question 05

6) From the following reaction sequence, match the reagents to each step:

Section reference: 21.2

a. MeI = Step 2

b. Na in NH₃ = Step 3

c. NaNH_{2 =} Step 1

Type: multiple response question

Title: Chapter 21 Question 07

7) For the following reaction, pick out the products. Please select all that apply.

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 08

8) For the following reaction, how many stereoisomeric products are formed?

a. 0

Section reference: 21.3

b. 1

Section reference: 21.3

c. 2

Section reference: 21.3

d. 3

Section reference: 21.3

e. 4

Section reference: 21.3

Type: multiple response question

Title: Chapter 21 Question 09

9) From the following molecules, pick out those which are meso. Please select all that apply.

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 10

10) For the following reaction, pick out the product:

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 11

11) What is the major product of the following reaction?

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 12

12) For the following reaction, pick out the product:

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 13

13) What is the major product of the following reaction?

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 14

14) For the following reaction, pick out the product:

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple response question

Title: Chapter 21 Question 15

15) From the following reagents, A-E, pick out those which react with alkenes preferentially by syn-addition. Please select all that apply.

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple choice question

Title: Chapter 21 Question 16

16) For the following reaction, pick out the product:

a. A

Section reference: 21.3

b. B

Section reference: 21.3

c. C

Section reference: 21.3

d. D

Section reference: 21.3

e. E

Section reference: 21.3

Type: multiple response question

Title: Chapter 21 Question 17

17) Ozonolysis of alkenes can lead to the formation of carbonyl derivatives. From the following reaction, pick out those alkenes which lead to formation of the given ketones. Please select all that apply.

a. A

Section reference: 21.4

b. B

Section reference: 21.4

c. C

Section reference: 21.4

d. D

Section reference: 21.4

Type: multiple choice question

Title: Chapter 21 Question 18

18) For the following reaction, pick out the product:

a. A

Section reference: 21.5

b. B

Section reference: 21.5

c. C

Section reference: 21.5

d. D

Section reference: 21.5

e. E

Section reference: 21.5

Type: multiple choice question

Title: Chapter 21 Question 19

19) For the following reaction, pick out the product:

a. A

Section reference: 21.5

b. B

Section reference: 21.5

c. C

Section reference: 21.5

d. D

Section reference: 21.5

e. E

Section reference: 21.5

Type: multiple choice question

Title: Chapter 21 Question 20

20) Which of the following carbocations is the most stable?

a. A

Section reference: 21.5

b. B

Section reference: 21.5

c. C

Section reference: 21.5

Type: true-false

Title: Chapter 21 Question 21

21) Mass spectrometry can be used to reliably determine whether an alkene is of E or Z configuration.

a. True

Section reference: 21.1

b. False

Section reference: 21.1

Type: multiple choice question

Title: Chapter 21 Question 22

22) Identify suitable conditions to effect the following transformation.

a. H₂

Section reference: 21.2

b. H₂, Lindlar catalyst

Section reference: 21.2

c. H₂, Pd-on-C

Section reference: 21.1

d. LiAlH₄

Section reference: 21.1

Type: multiple response question

Title: Chapter 21 Question 23

23) Identify suitable conditions ‘X’ to effect the reaction below. Please select all that apply.

Section reference: 21.4

a. Me₂S

b. Zn

c. PPh₃

d. H₂O₂

Type: multiple choice question

Title: Chapter 21 Question 24

24) Identify which pair of products would form in the following reaction:

a. Products A

Section reference: 21.4

b. Products B

Section reference: 21.4

c. Products C

Section reference: 21.4

d. Products D

Section reference: 21.4

Type: multiple choice question

Title: Chapter 21 Question 25

25) Identify the first-formed ionic intermediate generated upon the reaction of HBr with but-1-yne.

a. A

Section reference: 21.5

b. B

Section reference: 21.5

c. C

Section reference: 21.5

d. D

Section reference: 21.5