Chemistry : Alcohols, Phenols and Ethers

Identify A and B in the following reaction

${\mathrm{CH}}_3-{\mathrm{CH}}_{3 }\stackrel{\mathrm{B}}{\leftarrow } {\mathrm{CH}}_3\mathrm{COOH} \stackrel{\mathrm{A}}{\to } {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

• A - HI + red P; B - LiAlH₄

• A - Ni/ $∆$ ; B - LiAlH₄

• A - LiAlH₄ ; B - HI + red P

• A - Pd- BaSO₄ ; B - Zn - HCl

The correct match is:

•  A-v, B-iii, C-iv, D-i

• A-i, B-ii, C-iii, D-iv

• A-iii, B-iv, C-i, D-ii

• A-iv, B-i, C-ii, D-v

The IUPAC name of the compound (CH₃)₂CH—CH=CHCHOH—CH₃ is

• 5-methyl-hex-3-en-2-ol

• 2-methyl-hex-3-en-5-ol

• 2-hydroxy-5-methyl-3-hexene

• 5-hydroxy-2-methyl-3-hexene

The conversion of O-acylated phenol in presence of AlCl₃ to C-acylated phenol is an example for this type of organic reaction

• addition reaction

• substitution reaction

• molecular rearrangement

• elimination reaction

Consider the following reaction-

C₂H₅Cl + AgCN $\stackrel{\mathrm{EtOH}/ {\mathrm{H}}_2\mathrm{O}}{\to }$ X (major)

Which one of the following statements is true for X ?

(I) It gives propionic acid on hydrolysis.

(II) It has an ester functional group.

(III) It has a nitrogen linked to ethyl carbon.

(IV) It has a cyanide group.

• IV

• III

• II

• I

The order of reactivity of phenol (I), nitrobenzene (II) and benzene (III) towards nitration is

• (III) > (I) > (II)

• (II) > (III) > (I)

• (I) > (III) > (II)

• (I) > (II) > (III)

The products formed, in the reaction of phenol with Br₂ dissolved in CS₂ at 0°C are

• o-bromo, m-bromo and p-bromophenols

• o-bromo and p-bromophenols

• 2,4,6-tribromo and 2,3,6-tribromophenols

• 2,4-dibromo and 2,6-dibromophenols

The structure of PCC is

• C₆H_{5$\stackrel{\oplus }{\mathrm{N}}$}HCrO₂${\mathrm{Cl}}^{⊝}$

• C₆H_{5$\stackrel{\oplus }{\mathrm{N}}$}HCrO₂${\mathrm{Cl}}^{⊝}$

• C₅H₅$\stackrel{\oplus }{\mathrm{N}}$HCrO₂${\mathrm{Cl}}^{⊝}$

• C₅H₅$\stackrel{\oplus }{\mathrm{N}}$HCrO₃${\mathrm{Cl}}^{⊝}$

Identify phenacetin from the following-

C₂H₅OH + 4I₂ + 3Na₂CO₃ → X + HCOONa + 5NaI + 3CO₂ + 2H₂O

In the above reaction, 'X' is

• diodomethane

• triodomethane

• iodomethane

• tetrariodomethane