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Haloalkanes and Haloarenes Test - 6

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Haloalkanes and Haloarenes Test - 6
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  • Question 1
    1 / -0
    The correct order for nucleophilic substitution among the alkyl halides is
  • Question 2
    1 / -0
    BrCH2 CH2 CH2Br + Mg X (major product)

    X in the above reaction is
  • Question 3
    1 / -0

    Tetrachloromethane (Carbon tetrachloride) is a

    Solution

     CCl4 was widely used as a cleaning fluid in industry as a degreasing agent.

  • Question 4
    1 / -0
    Vinyl chloride and propargyl chloride are respectively the chloro derivatives of
  • Question 5
    1 / -0
    When carbon disulphide reacts with excess of chlorine in the presence of a Lewis acid as a catalyst, the product obtained is a
  • Question 6
    1 / -0
    In the Finkelstein reaction for preparation of iodoalkanes from alkyl chlorides and bromides, acetone is used as
  • Question 7
    1 / -0
    Alkyl bromides are prepared by the following reaction:

    C2H5OH + KBr + HBr C2H5Br + KHSO4 + H2O

    The mixture of KBr and H2SO4 is not used for secondary and tertiary alcohols because
  • Question 8
    1 / -0
    The increasing order of boiling points in the following alkyl halides is
  • Question 9
    1 / -0
    Which among the following is a geminal dihalide?
  • Question 10
    1 / -0
    The boiling point of the alkyl halides (for the same alkyl group) increases in the following order:

    R-I > R-Cl > R-Br > R-F

    Which of the following options justifies the trend?
  • Question 11
    1 / -0
    The free radical iodination of hydrocarbons requires an oxidizing agent like HgO because
  • Question 12
    1 / -0
    Sandmeyer's method of preparation of chlorobenzene proceeds through which of the following mechanisms?
  • Question 13
    1 / -0
    The IUPAC name of chloral (C2HCl3O) is
  • Question 14
    1 / -0
    Which among the following is an allyl halide?
  • Question 15
    1 / -0
    The reagent preferred for iodination of benzene ring in the presence of a halogen carrier (Friedal-Craft reaction) is
  • Question 16
    1 / -0
    Darzens method of preparing chloroalkanes by refluxing alcohol with thionyl chloride (SOCl2) in the presence C5H5N is preferred because
  • Question 17
    1 / -0
    Alkyl fluorides are prepared indirectly from alkyl chlorides using inorganic fluorides such as AsF3, AgF, SbF3, etc. The process is referred to as Swart's reaction. Direct fluorination of alkanes is avoided because
  • Question 18
    1 / -0
    Neopentyl chloride is preferably prepared by free radical chlorination of neopentane because
  • Question 19
    1 / -0
    In the presence of two different -hydrogens, the dehydrohalogenation of fluoroalkanes would yield
  • Question 20
    1 / -0
    C6H5CH3  X  Y  Z

    The product Z is
  • Question 21
    1 / -0

    A halogen used in potential blood substitutes in surgery is

    Solution

    Certain fully fluorinated compounds are being considered as potential blood substitutes in surgery. So fluorine is the element used in these blood substitutes.

  • Question 22
    1 / -0
    Identify the incorrect statement.
  • Question 23
    1 / -0
    Which of the following cannot be a product of the following reaction?

    CH3–C  CH + (CH3)3 C – Br
  • Question 24
    1 / -0
    CH3 – CH CH2+ SO2CI2  A The product A of the above reaction is
  • Question 25
    1 / -0
    By the action of PCl5 on glycol, the product(s) obtained is/are
  • Question 26
    1 / -0

    To prepare alkanes containing odd number of carbon atoms, Wurtz reaction is not preferred because

    Solution

    Alkyl halides on treatment with sodium metal in dry ethereal (free from moisture) solution give higher alkanes. This reaction is known as Wurtz reaction and is used for the preparation of higher alkanes containing even number of carbon atoms. Many side products are formed when two different alkyl halides are used. So this method is not preferred to prepare alkanes having odd number of  C atoms.

  • Question 27
    1 / -0
    Among the following alkyl halides, the one which is not an , –dihalide is
  • Question 28
    1 / -0
    When exposed to light, which of the following alkyl halides is/are expected to develop colour?

    (i)   C2H5I
    (ii)  C2H5Cl
    (iii) C2H5F
    (iv) C2H5Br
  • Question 29
    1 / -0

    The most common freons in industrial use is manufactured by

    Solution

    The chlorofluorocarbon compounds of methane and ethane are collectively known as freons. They are extremely stable, unreactive, non-toxic, non-corrosive and easily liquefiable gases. Freon 12 (CCl2F2) is one of the most common freons in industrial use. It is manufactured from tetrachloromethane by Swarts reaction.

  • Question 30
    1 / -0

    The most common freons in industrial use is manufactured by

    Solution

    The chlorofluorocarbon compounds of methane and ethane are collectively known as freons. They are extremely stable, unreactive, non-toxic, non-corrosive and easily liquefiable gases. Freon 12 (CCl2F2) is one of the most common freons in industrial use. It is manufactured from tetrachloromethane by Swarts reaction.

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