Identify the final product.

• 

• 

• 

• None of these

CH$\equiv$CH $\underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{{\mathrm{HgSO}}_4}{\to }}$ $\underset{{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{CH}}_3\mathrm{MgBr}}{\to }}$ $\stackrel{\mathrm{P}/{\mathrm{Br}}_2}{\to }$

• CH₃CH(Br)CH₃

• CH₃CH₂CH₂Br

• CH₂=CH-Br

• BrCH=CH-CH₃

Number of bonds in benzene :

• 6$\mathrm{\sigma }$ and 3$\mathrm{\pi }$

• 12$\mathrm{\sigma }$ and 3$\mathrm{\pi }$

• 3$\mathrm{\sigma }$ and 12$\mathrm{\pi }$

• 6$\mathrm{\sigma }$ and 6$\mathrm{\pi }$

Propene on hydroboration and oxidation produces

• CH₃CH₂CH₂OH

• CH₃CHOHCH₃

• CH₃CHOHCH₂OH

• CH₃CH₂CHO

${\mathrm{C}}_6{\mathrm{H}}_{6 }\underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{{\mathrm{HNO}}_3}{\to }} \mathrm{X} \underset{{\mathrm{FeCl}}_3}{\overset{{\mathrm{Cl}}_2}{\to }} \mathrm{Y}$

In the above sequence Y can be

• 3-nitrochlorobenzene

• 1-nitrochlorobenzene

• 4-nitrochlorobenzene

• none of these

566.

Which of the following is aromatic?

• 

• 

• 

• 

Which of the following species participate in sulphonation of benzene ring?

• H₂SO₄

• SO₃

• HSO${}_3^{-}$

• SO${}_2^{-}$

Geometrical isomerism is found in :

• pentene - 1

• pentane

• 2 - butene

• butene - 1

The reagent used in Gatterman Koch aldehyde synthesis is :

• Pb/BaSO₄

• alkaline KMnO₄

• acidic KMnO₄

• CO + HCl

Cetane is a compound which has very good ignition property .Chemically it is :

• CH₃(CH₂)₁₄CH₃

• (CH₃)₃C(CH₂)₁₁CH₃

• C₁₇H₃₄

• None of the above