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Haloalkanes and Haloarenes Test - 4

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Haloalkanes and Haloarenes Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0

    In a coordination entity of the type [PtCl2(en)2]2+ which isomer will show optical isomerism?

    Solution

  • Question 2
    1 / -0

    AgCN reacts with haloalkanes to form isocyanide. Haloalkanes react with KCN to form alkyl cyanides as main product

    Solution

    AgCN is covalent in nature while KCN is ionic so KCN produces CN- in the solution.


    CN- is an ambient nucleophile i.e. it can form bond from both C and N atoms. KCN is an ionic compound so both C and N sides are available for the formation of bond, but C-C bond is stronger than C-N bond so cynide is formed. AgCN is a covalent compound so only N side is available for CN to form bond and thus isocynide is formed

  • Question 3
    1 / -0
    Which of the following has the highest boiling point?
  • Question 4
    1 / -0

    are the possible structural isomers expected to be formed if one of the hydrogen atoms is replaced by chlorination. The original compound is

    Solution

  • Question 5
    1 / -0
    Which of the following is correct?
  • Question 6
    1 / -0

    The reaction RX + 2Na + RX _______________? R – R + 2NaX is called.

    Solution

    This name reaction wurtz reaction.when 2 moles alkyl halide reacts with sodium then it is called wurtz reaction.

  • Question 7
    1 / -0
    Which of the following compounds is an allyl bromide?
  • Question 8
    1 / -0
    Which of the following compounds has the highest boiling point?
  • Question 9
    1 / -0
    Which of the following compounds has the highest density?
  • Question 10
    1 / -0
    1-phenyl-2-chloropropane, when treated with alcoholic KOH, gives ______ as the major product.
  • Question 11
    1 / -0
    Chlorobenzene can be prepared by reacting aniline with
  • Question 12
    1 / -0
    Addition of HCl to vinyl chloride gives 1,1–dichloroethane because of
  • Question 13
    1 / -0
    The formation of two chlorine radicals from a chlorine molecule is an example of
  • Question 14
    1 / -0
    The IUPAC name of the given structure is

  • Question 15
    1 / -0
    Alkyl halides, on treatment with a suspension of Ag2O (dry), give
  • Question 16
    1 / -0
    Which of the following products is formed when propene is reacted with HBr atom in the presence of peroxide?
  • Question 17
    1 / -0
    Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to
  • Question 18
    1 / -0
    1, 1, 2, 2 - Tetrabromoethane, on treatment with Zn dust, yields a/an
  • Question 19
    1 / -0
    The reaction of o-chloroaniline with a mixture of HCl and NaNO2, followed by cuprous bromide, will give 
  • Question 20
    1 / -0

    For the same alkyl group, an alkyl bromide has a higher boiling point than alkyl fluoride because,

    Solution

    Vanderwall forces increases with increase in molecular mass and boiling point increases with vanderwall forces..


    The main factor affecting the boiling point is the molecular weight, as can be pictured from the noble gases boiling point in the periodic table (the noble gases are those which have the weakest interactions due to their complete outer shell). But note that if you want to consider all the effects altogether, you must use Kelvins instead of Celsius. So going from 44°C to 88°C is not twice as much but a mere 14% increase.


    The other factor affecting boiling point is the nature and strength of intermolecular interactions, usually in the order ionic > hydrogen bond > dipole-dipole > Van der Waals.


    In the comparison of RF vs RBr boiling point, molecular weight is definitely in favor of higher boiling points for RBr, at least for small molecules. It is true that the C-F bond is much more ionized than C-Br so it will create stronger dipole-dipole interactions but not sufficiently to compensate for the effect of the mass increase.

  • Question 21
    1 / -0
    What are the end products of the reaction given below as per Groove's process? 

    Ethanol HCl  
  • Question 22
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following rules states that during the addition across unsymmetrical double bond, the negative part of the attacking reagent attaches itself to the carbon atom carrying lesser number of hydrogen atoms?
  • Question 23
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Fluorobenzene (C6H5F) can be synthesized in a laboratory
  • Question 24
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Groove's method is not used for the preparation of
  • Question 25
    1 / -0
    Consider the following reaction:

     Tribromo benzene
    Here, X is 
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