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11th Standard Chemistry Haloalkanes and Haloarenes English Medium Free Online Test One Mark Questions 2020 - 2021

11th Standard

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Chemistry

Time : 00:20:00 Hrs
Total Marks : 20

    Answer all the questions

    20 x 1 = 20
  1. The IUPAC name of  is

    (a)

    2-Bromo pent – 3 – ene

    (b)

    4-Bromo pent – 2 – ene

    (c)

    2-Bromo pent – 4 – ene

    (d)

    4-Bromo pent – 1 – ene

  2. Arrange the following compounds in increasing order of their density
    A) CCl4
    B) CHCl3
    C) CH2Cl2
    D) CH3Cl

    (a)

    D < C < B < A

    (b)

    C > B > A > D

    (c)

    A < B < C < D

    (d)

    C > A > B > D

  3. In the reaction  X is ________.

    (a)

    (b)

    (c)

    (d)

  4. The treatment of ethyl formate with excess of RMgX gives

    (a)

    \(R-\underset { \overset { || }{ O } }{ C } -R\)

    (b)

    \(R-\underset { \overset { | }{ OH } }{ CH } \quad R\)

    (c)

    R- CHO

    (d)

    R- O- R

  5. The name of C2F4Cl2 is ___________

    (a)

    Freon – 112

    (b)

    Freon – 113

    (c)

    Freon – 114

    (d)

    Freon – 115

  6. Match the compounds given in Column I with suitable items given in Column II

     Column I
      (Compound)  
      Column II  
    (Uses)
     A. Iodoform  1. Fire extinguisher   
     B. Carbontetra chloride       2. Insecticide
     C. CFC  3. Antiseptic
     D. DDT  4. Refrigerants
    (a)

    A → 2 B → 4 C →1 D →3

    (b)

    A → 3 B → 2 C → 4 D → 1

    (c)

    A → 1 B → 2 C →3 D → 4

    (d)

    A → 3 B → 1 C →4 D → 2

  7. Consider the reaction,
    CH3CH2CH2Br + NaCN → CH3CH2CH2CN + NaBr
    This reaction will be the fastest in

    (a)

    ethanol

    (b)

    methanol

    (c)

    DMF (N, N' – dimethyl formanide)

    (d)

    water

  8. Ethylidene chloride on treatment with aqueous KOH gives

    (a)

    acetaldehyde

    (b)

    ehtyleneglycol

    (c)

    formaldehyde

    (d)

    glycoxal

  9. Chloroform reacts with nitric acid to produce

    (a)

    nitro toluene

    (b)

    nitro glycerine

    (c)

    chloropicrin

    (d)

    chloropicric acid

  10. Which of the following is an example of aryl alkyl halide?

    (a)

    Benzyl chloride

    (b)

    Benzoyl chloride

    (c)

    Chloro benzene

    (d)

    Methyl chloride

  11. The best reagent for converting an alcohol into the corresponding chloride is

    (a)

    PCl3

    (b)

    PCl5

    (c)

    SOCl2

    (d)

    HCl/ZnCl2​​​​​​​

  12. NBS is a specific reagent for________________.

    (a)

    Nucleophilic substitution reaction

    (b)

    Electrophilic substitution

    (c)

    Electrophillic addition

    (d)

    Allylic substitution

  13. Ethyl bromide reacts with sodium lead alloy to form_____________.

    (a)

    Chloro ethane

    (b)

    1 - Chluro propane

    (c)

    Vinyl chloride.

    (d)

    Bromo benze

  14. Identify the aryl halide among the following

    (a)

    (b)

    (c)

    (d)

  15. .CH3 - CH = CH2\(\overset { HBr }{ \underset { peroxide }{ \longrightarrow } } \)? The above reaction undergoes

    (a)

    Electrophilic substitution

    (b)

    Nucleophilic substitution

    (c)

    Markovnikov's addition

    (d)

    Anti-Markovnikov's addition

  16. Among the following, which is not an allylic halide?

    (a)

    3-bromo-i-methyl propene

    (b)

    4-bromo but-l-ene and

    (c)

    3-bromo-2-methyl but -1- ene

    (d)

    All of these

  17. When alkyl halides are heated with dry Ag2O, they give

    (a)

    diethyl ether

    (b)

    ester

    (c)

    ketone

    (d)

    aldehyde

  18. For reacting with HCI, the alcohol which does not require ZnCl2 is

    (a)

    CH3 CH2 OH

    (b)

    CH3-CH2 CH2 OH

    (c)

    CH3-CH OH

    (d)

    (CH3)3 C - OH

  19. The IUPAC name for CH3-C - CH - CH3 CH3 CI CH3

    (a)

    2-Bromo-3-chloro-2,4-dimethyl pentane

    (b)

    3-Bromo':'2-chloro-2,4-dimethyl pentane

    (c)

    2-Bromo-3-chloro-2,4-dimethyl propane

    (d)

    None of the above

  20. Which is a sweet-smelling liquid?

    (a)

    CH3 CI 

    (b)

    CH3 Br

    (c)

    CH3 I

    (d)

    CH3CH2CI

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