Alcohols, Phenols and Ethers

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1. 1 2024 #
   Which one of the following alcohols reacts instantaneously with Lucas reagent?
   A $CH_3-CH(CH_3)-CH_2OH$

   B $CH_3-C(CH_3)_2-OH$

   C $CH_3-CH_2-CH_2-CH_2OH$

   D $CH_3-CH_2-CH(CH_3)-OH$
   Check Answer
2. 2 2024 #
   Identify the correct reagents that would bring about the following transformation.
   A (i) $BH_3$ (ii) $H_2O_2/OH^-$ (iii) alk. $KMnO_4$ (iv) $H_3O^+$

   B (i) $H_2O/H^+$ (ii) PCC

   C (i) $H_2O/H^+$ (ii) $CrO_3$

   D (i) $BH_3$ (ii) $H_2O_2/OH^-$ (iii) PCC
   Check Answer
3. 3 2024 #
   The products A and B obtained in the following reactions, respectively, are $3ROH + PCl_3 \rightarrow 3RCl + A$ $ROH + PCl_5 \rightarrow RCl + HCl + B$
   A $H_3PO_4$ and $POCl_3$

   B $H_3PO_3$ and $POCl_3$

   C $POCl_3$ and $H_3PO_3$

   D $POCl_3$ and $H_3PO_4$
   Check Answer
4. 4 2023 #
   Consider the following reaction
   
   Identify products A and B
   A -

   B -

   C -

   D -
   Check Answer
5. 5 2023 #
   Which amongst the following will be most readily dehydrated under acidic conditions ?
   A -

   B -

   C -

   D -
   Check Answer
6. 6 2022 #
   Given below are two statements: Statement I: The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group. Statement II: o-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring. In the light of the above statements, choose the most appropriate answer from the options given below:
   A Statement I is incorrect but Statement II is correct

   B Both Statement I and Statement II are correct

   C Both Statement I and Statement II are incorrect

   D Statement I is correct but Statement II is incorrect
   Check Answer
7. 7 2022 #
   Given below are two statements: Statement I: In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. HCl + $ZnCl_2$, known as Lucas Reagent. Statement II: Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent. In the light of the above statements, choose the most appropriate answer from the options given below:
   A Statement I is incorrect but Statement II is correct

   B Both Statement I and Statement II are correct

   C Both Statement I and Statement II are incorrect

   D Statement I is correct but Statement II is incorrect
   Check Answer
8. 8 2021 #
   What is the IUPAC name of the organic compound formed in the following chemical reaction? Acetone $\xrightarrow[(ii)\ H_2O,\ H^+]{(i)\ C_2H_5MgBr,\ dry\ ether}$ Product
   A Pentan-2-ol

   B Pentan-3-ol

   C 2-methyl butan-2-ol

   D 2-methyl propan-2-ol
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9. 9 2021 #
   The product formed in the following chemical reaction is: [add image]
   A [add image]

   B [add image]

   C [add image]

   D [add image]
   Check Answer
10. 10 2020 #
    Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:
    A Sec. butyl alcohol

    B Tert. butyl alcohol

    C Isobutyl alcohol

    D Isopropyl alcohol
    Check Answer
11. 11 2020 #
    Anisole on cleavage with HI gives:
    A [add image] + $CH_3OH$

    B [add image] + $C_2H_5I$

    C [add image] + $C_2H_5OH$

    D [add image] + $CH_3I$
    Check Answer
12. 12 2019 #
    The compound that is most difficult to protonate is: [add image]
    A $H-O-H$

    B $H_3C-O-H$

    C $H_3C-O-CH_3$

    D $Ph-O-H$
    Check Answer
13. 13 2019 #
    The structure of intermediate A in the following reaction is: [add image]
    A [add image]

    B [add image]

    C [add image]

    D [add image]
    Check Answer

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