Introduction to Organic Chemistry (AQA A Level Chemistry)

Exam Questions

4 hours45 questions
11 mark

2,2-dimethylpropane is an isomer of pentane. 

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What type of isomerism is shown by 2,2-dimethylpropane? 

  • Stereoisomerism

  • Functional group

  • Cyclic

  • Chain

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21 mark

Which of the following molecules are hydrocarbons?

6XkBEQnz_14

 

1

2

3

4

A

B

C

D

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    31 mark

    What is the correct formula for 1-fluoro-3-methylbut-2-ene?

    A

    Structural

    CH2FCH2C(CH3)CH3

    B

    Displayed

    49PoSHH-_18

    C

    Empirical

    C5H9F

    D

    Skeletal

    LNQCffqj_17

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      41 mark

      What is the correct meaning of the term structural isomer

      • A compound that contains a different molecular formula and the atoms are arranged differently in space

      • A compound that contains the same molecular formula but the atoms are arranged differently in space

      • A compound with the same empirical formula but different structural formula

      • A compound with the same molecular formula but different structural formula

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      51 mark

      Which of the following is the displayed formula for ethylamine?

      • o2fVq3mh_19

      • ~NmP58cu_20

      • Nzgj0Zrn_21

      • 5AHXcvF8_22

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      61 mark

      Which of the hydrocarbons shown below does not belong in the same homologous series as the other compounds?

      • C9H20

      • C8H16

      • C7H16

      • C8H18

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      71 mark

      What is the identity of the functional group that is ringed in the molecule shown below?

      M3qovCdV_23

      • Aldehyde

      • Ketone

      • Carboxylic acid 

      • Alkene

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      81 mark

      What is the IUPAC name of the following molecule?

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      • 2-chloro-3-methylpentane

      • 3-methyl-4-chloropentane

      • 2-ethyl-3-chlorobutane

      • 2-chloro-3-ethylbutane

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      91 mark

      Chlorine gas reacts explosively with hydrogen in sunlight.

      Which of the following represents the initiation step of the reaction?

      • H + Cl→ HCl

      • H + Cl2 → HCl + Cl

      • Cl + H2 → HCl + H

      • Cl2 → Cl + Cl

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      101 mark

      What is the correct IUPAC name for the stereoisomer below?

      z-1-2-dichloroethene-displayed-

      • E-1,2-dichloroethene

      • Z-1,2-chloroethene

      • E-1,2-dichloroethane

      • Z-1,2-dichloroethene

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      11 mark

      Xylitol is an artificial sweetener used in toothpastes and chewing gum to improve their taste without impairing dental hygiene.

      q1-medium-3-1-introduction-to-organic-chemistry

      Which functional groups could be produced if xylitol is oxidised under suitable conditions?

       

      Alkene

      Aldehyde

      Carboxylic acid

      Ketone

      A

      B

      C

      D

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        21 mark

        How many structural isomers are there of tribromopropane, C3H5Br3?

        • 4

        • 5

        • 6

        • 7

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        31 mark

        Which features about the members of a homologous series are correct?

         

        All members have the same general formula

        The members have similar chemical properties

        The members show a gradual change in physical properties

        A

        B

        C

        D

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          41 mark

          Octane is a component of petrol or gasoline. Which of the following molecules could be an isomer of octane?

          • CH3CH2CHCHCHCH2(CH3)2 

          • CH3(CH2)5CH3

          • (CH3)2CHCH(CH2)2(CH3)2

          • CH3CHCHCH(CH2)2(CH3)

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          51 mark

          What is the name of the following molecule?

          q5-medium-3-1-introduction-to-organic-chemistry

          • 2,3,3-tetramethylpentane

          • 3,3,5-trimethylhexane

          • 2,4,4,4-trimethylethylbutane

          • 2,4,4-trimethylhexane

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          61 mark

          How many branched-chain isomers are there which have the molecular formula C5H12?

          • 3

          • 4

          • 5

          • 6

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          71 mark

          Which statements are correct for the organic molecule below?

          q7-medium-3-1-introduction-to-organic-chemistry

           

          IUPAC name is hex-4-ene

          The empirical formula is CH2

          It is an isomer of cyclohexane

          A

          B

          C

          D

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            81 mark

            Which of the molecules shown below contains an aldehyde functional group?

            • CH3CH2CH2COCH3

            • CH3CH2OOCH3

            • H3CH2OCH2CH2CH2CH3

            • CHOCH2CHOHCH2CH3

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            91 mark

            Which of the formulas below shows a tertiary halogenoalkane?

            • CH3CH2CH2I

            • C(CH3)3Cl

            • CH3CH2CH(CH3)Br

            • CH3CHClCH2CH3

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            101 mark

            What is the correct name for this isomer?

            q10-medium-3-1-introduction-to-organic-chemistry

            • Z-1,2-dibromopropene

            • Z-1,2-dibromoethene

            • E-1,2-dibromoethane

            • Z-1,4-dibromoethene

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            11 mark

            What is the systematic name of the compound below?

            q1-hard-3-1-introduction-to-organic-chemistry

            • E-2-bromobut-2-ene

            • Z-2-bromobut-2-ene

            • E-1,2-dimethyl-1-bromoethene

            • Z-1,2-dimethyl-1-bromoethene

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            21 mark

            Limonene is found in the peel of citrus fruits.

            q2-hard-3-1-introduction-to-organic-chemistry

            What is the correct empirical and molecular formula of limonene?

             

            Empirical Formula

            Molecular formula

            A

            C9H13

            C9H13

            B

            C5H9

            C10H18

            C

            C10H8

            C10H16

            D

            C5H8

            C10H16

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              31 mark

              How many structural isomers of C6H14O are tertiary alcohols?

              • 2

              • 3

              • 4

              • 5

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              41 mark

              How many isomers with the formula C5H10, including structural and stereoisomers, contain π bonds (double bonds)?

              • 3

              • 4

              • 5

              • 6

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              51 mark

              Which compound is unsaturated, alicyclic and contains an alkyl group?

              T27WrHBX_q5-hard-3-1-introduction-to-organic-chemistry

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                61 mark

                What is the correct structural formula for 2,2-dibromo-4-methylhexane?

                • CH3CHBrCBr(CH3)CH2CH2CH3

                • CH3CBr2CH(CH3)CH2CH2CH3

                • CH3CHBrCH(CH3)CHBrCH2CH3

                • CH3CBr2CH2CH(CH3)CH2CH3

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                71 mark

                Which of the following are functional group isomers of one another?

                 

                CH3CH2CH2COOH

                CH3CH(OH)CH2CH2CH3

                HCOOCH2CH2CH3

                CH3CH2CH(OH)CH2CH3

                A

                B

                C

                D

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                  81 mark

                  What types of isomerism can the following molecule show?

                  q8-hard-3-1-introduction-to-organic-chemistry

                   

                  Branch-chain

                  Positional

                  Functional group

                  A

                  B

                  C

                  D

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                    91 mark

                    Which of the following are functional group isomers of each other?

                    q9-hard-3-1-introduction-to-organic-chemistry

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                      101 mark

                      Z-Citral, shown in the diagram, is used in the synthesis of vitamin A.

                      Which of the double bonds, labelled A, B, C or D, is responsible for the letter Z in the name?

                      ma10-hard-3-1-introduction-to-organic-chemistry

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