Self Studies
Self Studies
Self Studies
Self Studies

Haloalkanes and Haloarenes Test 4

Result Self Studies

Haloalkanes and Haloarenes Test 4
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0

    (i) CH3 – CH2 – Br + NaOH  CH3 – CH2 – OH + NaBr → reaction ... (i)

    (ii)  + NaOH  (CH3)3 C – CH2 – OH + NaBr → reaction ... (ii)

    K1 & K2 are rate constant for above reaction correct relation is

    Solution



    This reaction is not proceed in forward direction.

  • Question 2
    1 / -0

    Free energy profile for given reaction is

    Solution


     (Reaction will be proceed in forward direction)

  • Question 3
    1 / -0

    Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCl at room temperature?

    Solution

    Option D is correct.
    At room temperature more stable carbocation is formed by any alkyl halide then that will give a stable and more efficient product.
    Formation of  3o carbocation as intermediate during reaction which is highly stable,this reaction does not require any heating to occur at only room temperature.

  • Question 4
    1 / -0

     (A),

    Major-product (A) is

    Solution


    This is SN2 reaction (Halide exchange method)

  • Question 5
    1 / -0

    (A), Product (A) is

    Solution


  • Question 6
    1 / -0

    Which of the following ethers is unlikely to be cleaved by hot conc. HBr ?

    Solution




    (D) 

  • Question 7
    1 / -0

    The reaction of CH3OC2H5 with one mole HI gives

    Solution

    The correct answer is option C
    When ethers are treated with a strong acid in the presence of a nucleophile, they can be cleaved to give alcohols and alkyl halides. If the ether is on a primary carbon this may occur through an SN2​ pathway. The reaction of CH3​OC2​H5​ with HI gives CH3​I+C2​H5​OH.

  • Question 8
    1 / -0

    Under identical conditions, solvolysis of which of the following substrates would lead to maximum racemization ?

    Solution




  • Question 9
    1 / -0

    The reaction of SOCl2 on alkanols to form alkyl chlorides gives good yields because

    Solution


    side product   of this reaction are escape out from reaction mixture. So product (alkyl chloride) are occurs in good yield. This is best method for formation of alkyl halide.

  • Question 10
    1 / -0

    Which of the following alcohol shows fastest reaction with HI ?

    Solution





    in above reaction corbocation is formed as intermediate. So rate of reaction stability of carbocation in above option most stable corbocation will formed that reaction will be fast.

  • Question 11
    1 / -0

    Arrange the following compounds in order of decreasing rate of hydrolysis for SN1 reaction

    (I) 
     (II) 
    (III) 
    (IV) 

    Solution

    Order of decreasing rate of hydrolysis for SN1 reaction in SN1 reaction intermediate corbocation is formed.





    decreasing stability order of following corbocation.

  • Question 12
    1 / -0

    For the given reaction ;

    Which substrate will give maximum racemisation

    Solution


    Maximum reacemisation stability of corbocation when substrate having chiral carbon.

  • Question 13
    1 / -0

    Which of these dehydrates most readily when reacts with conc. H3PO4.

    Solution

    (A) 
    (B) 
    (C) 
    (D) 

  • Question 14
    1 / -0

     (P)

    (Major). Major product (P) is :

    Solution


  • Question 15
    1 / -0

    Which of following halides gives fastest elimination reaction when it is treated with alcoholic KOH.

    Solution




  • Question 16
    1 / -0

    Which alkyl bromide will yield only one alkene upon E2 elimination ?

    Solution




  • Question 17
    1 / -0

      

    which is most easily dehydrohalogenated ?

    Solution

  • Question 18
    1 / -0

    Correct order of yield of Hofmann alkene in following reaction will be

     X may be F, Cl Br or l

    Solution


     (bad leaving group) give Haffmann alkene order of X for Hofmann alkene → F > Cl > Br > I

  • Question 19
    1 / -0

    Predict the major product of the following reaction :

     

    Solution

  • Question 20
    1 / -0

      major product having aH

    Solution

  • Question 21
    1 / -0

    SN1 is a two-step reaction. For each step, there has to be a transition state. Which of the following structures represent correctly the transition state of first step

    Solution

    SN1 is two step reaction.
    First step : Formation of carbocation

  • Question 22
    1 / -0

    Which one of the following compounds will give enantiomeric pair on treatment with HOH?

    Solution




  • Question 23
    1 / -0

    Which of the following compounds is most rapidly hydrolysed by SN1 mechanism

    Solution

    Following comp. is most rapidly hydrolysed by SN1 mechanism.


    Most stable corbocation will be more rapidly hydrolysed by SN1 mechanism.

  • Question 24
    1 / -0

    Which will give white ppt. with AgNO3 ?

    Solution

    Following comp. gives white ppt with AgNO3 which formed more stable corbocation.

  • Question 25
    1 / -0

      A. A is :

    Solution


    (T.S will be stable  due to electron cloud of p orbital) 

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now