The total number of aromatic species generated in the following reactions is

• zero

• 2

• 3

• 4

The IUPAC name of the following molecule is

• 5,6-dimethylhept-2-ene

• 2,3-dimethylhept-5-ene

• 5,6-dimethylhept-3-ene

• 5-iso-propylhex-2-ene

The 4th higher homologue of ethane is

• butane

• pentane

• hexane

• heptane

The order of decreasing ease of abstraction of hydrogen atoms in the following molecules

• H_a > H_b > H_c

• H_a > H_c  > H_b

• H_b > H_a > H_c

• H_c > H_b > H_a

275.

Reaction of benzene with Me₃CCOCl in the presence of anhydrous AlCl₃ gives

• 

• 

• 

• 

Treatment of  with NaNH₂/ liq.NH₃ gives

The best method for the preparation of 2, 2-dimethylbutane is via the reaction of

• Me₃CBr and MeCH₂Br in Na/ether

• (Me₃C)₂CuLi and MeCH₂Br

• (MeCH₂)₂CuLi and Me₃CBr

• Me₃CMgI and MeCH₂I

In 2-butene, which one of the following statements is true?

• C₁-C₂ bond is a sp³- sp³- $\mathrm{\sigma }$-bond

• C₂- C₃ bond is sp³ - sp²- $\mathrm{\sigma }$-bond

• C₁- C₂ bond is a sp³ - sp² - $\mathrm{\sigma }$-bond

• C₁- C₂ bond is a  sp²- sp²- $\mathrm{\sigma }$-bond 

The ease of nitration of the following three hydrocarbons follows the order 

• II - III ≈ I

• II > III > I

• III > II > I

• I = III > II

Among the alkenes which one produces tertiary butyl alcohol on acid hydration? 

• CH₃-CH₂-CH=CH₂

• CH₃-CH=CH-CH₃

• (CH₃)₂C=CH₂

• CH₃-CH=CH₂