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Which one of the following cannot exist in isomeric forms?
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1. C3H8
2. C4H10
3. C5H12
4. C6H14
5. C7H16
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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
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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
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1. (a)
2. (b)
3. (c)
4. (d)
5. (e)
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Which one of the following is m-cresol?
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1. 2.
3.
4. 5.
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Which of the following is a mixed ether?
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1. methoxymethane
2. ethoxyethane
3. methoxyethane
4. methoxybenzene
5. phenoxybenzene
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Strychnine and nicotine are examples of naturally occurring _____.
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1. carboxylic acids
2. amines
3. amino alcohols
4. esters
5. steroids
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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
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Which one of the following is m-methylbenzoic acid (also called m-toluic acid)?
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1. 2.
3.
4. 5.
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Which one of the following is an aliphatic acyl group?
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1. 2.
3.
4. 5.
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Which classification by functional group for the given compound is incorrect?
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1. ethylene - alkene
2. m-cresol - phenol
3. 2-propanol - alcohol
4. acetone - ester
5. aniline - amine
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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?
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1. Lewis base
2. Bønsted-Lowry base
3. Lewis acid
4. Brønsted-Lowry acid
5. reducing agent
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The reaction of 1-butanol with nitric acid is an example of a(an) _____ reaction.
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1. aromatic
2. addition
3. alkylation
4. substitution
5. olefinic
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The reaction of propylene (propene) with cold sulfuric acid, followed by treatment of the product with steam, produces _____.
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1. ethyl alcohol
2. 2-propanol
3. propyl sulfate
4. ethyl hydrogen sulfate
5. glycerol
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What fundamental class of organic reactions is a dehalogenation reaction?
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1. substitution
2. addition
3. elimination
4. polymerization
5. hydrolysis
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Below is a list of substances each matched with its function in natural rubber. Which match is incorrect? Substance / Function
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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
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Which of the following is not a condensation polymer correctly classified?
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1. Protein - polypeptide
2. nylon - polyamide
3. Dacron - polyester
4. Mylar - polyester
5. Teflon - polyamide