which one of the following cannot exist in isomeric forms? 1234567891011121314151617181920...

Which one of the following cannot exist in isomeric forms?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. C3H8

2. C4H10

3. C5H12

4. C6H14

5. C7H16

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. 3,5-dimethylhexane

2. 2-ethyl-4-methylpentane

3. 2,4,4-trimethylhexane

4. 2-methyl-4-ethylpentane

5. 2-ethyl-2,4-dimethylpentane

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. 1,3-dimethylbenzene; p-xylene

2. 1,3-dimethylbenzene; m-xylene

3. 1,4-dimethylbenzene; toluene

4. 1,4-dimethylbenzene; p-xylene

5. 1,4-dimethylbenzene; o-xylene

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. (a)

2. (b)

3. (c)

4. (d)

5. (e)

Which one of the following is m-cresol?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

Which of the following is a mixed ether?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. methoxymethane

2. ethoxyethane

3. methoxyethane

4. methoxybenzene

5. phenoxybenzene

Strychnine and nicotine are examples of naturally occurring _____.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. carboxylic acids

2. amines

3. amino alcohols

4. esters

5. steroids

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. 3-methylbutanoic acid — γ- methylbutyric acid

2. 2-methylbutanoic acid — β- methylbutyric acid

3. 3-methylbutanoic acid — β- methylbutyric acid

4. 2-methylbutanoic acid — γ- methylbutyric acid

5. 3-methylpropanoic acid — β- methylpropionic acid

Which one of the following is m-methylbenzoic acid (also called m-toluic acid)?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

Which one of the following is an aliphatic acyl group?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. 2.

3.

4. 5.

Which classification by functional group for the given compound is incorrect?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. ethylene - alkene

2. m-cresol - phenol

3. 2-propanol - alcohol

4. acetone - ester

5. aniline - amine

Anhydrous iron(III) chloride can be used as a catalyst for the halogenation of an aromatic ring. What kind of compound is iron(III) chloride in this reaction?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. Lewis base

2. Bønsted-Lowry base

3. Lewis acid

4. Brønsted-Lowry acid

5. reducing agent

The reaction of 1-butanol with nitric acid is an example of a(an) _____ reaction.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. aromatic

2. addition

3. alkylation

4. substitution

5. olefinic

The reaction of propylene (propene) with cold sulfuric acid, followed by treatment of the product with steam, produces _____.

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. ethyl alcohol

2. 2-propanol

3. propyl sulfate

4. ethyl hydrogen sulfate

5. glycerol

What fundamental class of organic reactions is a dehalogenation reaction?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. substitution

2. addition

3. elimination

4. polymerization

5. hydrolysis

Below is a list of substances each matched with its function in natural rubber. Which match is incorrect? Substance / Function

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. latex (sap of rubber tree) / natural source for rubber

2. sulfur / vulcanization

3. carbon black / reinforcing agent

4. antimony (V) sulfide / cross-linking

5. zinc oxide / filler

Which of the following is not a condensation polymer correctly classified?

1 2 3 4 5

20% 20% 20%20%20%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

1. Protein - polypeptide

2. nylon - polyamide

3. Dacron - polyester

4. Mylar - polyester

5. Teflon - polyamide