Hydrocarbons

Which one of the following has highest boiling point?

• H₃CCH₂CH₂CH₂Cl

• (H₃C)₂CHCH₂Cl

• (H₃C)₃CCl

• H₃CCH₂CHClCH₃

The product Z of the following reaction is H₃CC≡CH $\stackrel{2\mathrm{HBr}}{\to }$ Z.

• H₃CCH₂CHBr₂

• H₃CCBr₂CH₃

• H₃CCHBrCH₂Br

• BrCH₂CH₂CH₂Br

Identify X and Y in the following reaction sequence

$\mathrm{X} \stackrel{\mathrm{Zn}}{\to } \mathrm{Y} \underset{\mathrm{Zn}-{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{O}}_3}{\to }} ({\mathrm{CH}}_3{)}_2\mathrm{CO} + {\mathrm{CH}}_2\mathrm{O}$

•  

  X	Y
  (CH3)2CHBrCH3	CH3CH=CHCH3

• X	Y
  (CH3)2CHCH2Br	CH3CH=CHCH3

• X	Y
  (CH3)2CBrCH2Br	(CH3)2C=CH2

• X	Y
  (CH3)2CHCHBr2	(CH3)2C=CH2

Oxidation of cyclohexene in presence of acidic potassium permaganate leads to

• glutaric acid

• adipic acid

• pimelic acid

• succinic acid

Cyclopentadienyl anion is

• benzenoid and aromatic

• non-benzenoid and aromatic

• non-benzenoid and non-aromatic

• non-benzenoid and anti- aromatic

The reactivity of alkyl bromides.

Towards iodide ion in dry acetone decrease in the order

• V > I > II > III

• I > IV> II> III

• III> II> I> I

• III > II > IV > I

Optically active CH₃—CH₂—CHOH—CH₃ was found to have lost its optical activity after standing in water containing a few drops of acids, mainly due to the formation of 

• CH₃—CH₂—CH=CH₂
  

• CH₃—CH=CH—CH₃

• CH₃—CH(CH₃)—CH₂—OH

• CH₃—CH₂—CH₂—CH₂—OH

Which one of the following alkenes when treated with HCl yields majority an anti Maxkovnikov product?

• CH₃O-CH=CH₂

• Cl-CH=CH₂

• F₃C-CH=CH₂

• H₂N-CH=CH₂

Polysubstitution is a major drawback in

• Friedel Craf t’ s alkylation

• Reimer Tiemann reaction

• FriedelCraft's acylation

• Acetylation of aniline

The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is :

• III < I <II

• III< II<I

• I< III< II

• II< I < III