Hydrocarbons

The alkene that will give the same product with HBr in the absence as well as in the presence of peroxide is

• 2-butene

• 1-butene

• propene

• 2-methylpropene

Chlorination of benzene in the presence of halogen carrier is an example of

• aromatic nucleophilic substitution

• aromatic electrophilic substitution

• aromatic nucleophilic addition

• aromatic electrophilic addition

For preparing an alkane, a saturated solution of sodium or potassium salt of a carboxylic acid is subjected to

• hydrolysis

• electrolysis

• oxidation

• hydrogenation

The reaction of  with HBr gives predominantly

An organic compound with molecular formula C₆H₁₂ upon ozonolysis give only acetone as the product. The compound is

• 2,3-dimethyl-1-butene

• 3-hexane

• 2-hexene

• 2,3-dimethyl-2-butene

Which one of the following carbanions is the least stable?

• CH₃CH₂^-

• CH₃^-

• (CH₃)₃C^-

• HC≡C^-

An alkene having the molecular formula C₉H₁₈ on ozonolysis gives 2, 2-dimethyl propanal and 2-butanone. The alkene is :

• 2, 2, 2-trimethyl-3-hexene

• 2, 2, 6-trimethyl-3-hexane

• 2, 3, 4-trimethyl-2-hexene

• 2, 2, 4-trimethyl-3-hexene

Observe the following reactions and predict the nature of A and B:

• A and B both are 

• A and B both are 

• A is  and B is 

• A is  and B is 

Nitration of aniline in strongly acidic medium, result in the formation of m-nitroaniline also. This is because :

• amino group is meta orienting during electrophilic substitution reaction

• nitro group goes always to the meta position irrespective of the substituents

• nitration of aniline is a nucleophilic substitution reaction in strongly acidic medium

• in strongly acidic conditions aniline is present as anilinium ion

How many σ and Π bonds are present in toluene?

• 3Π + 8σ

• 3Π + 10σ

• 3Π + 15σ

• 6Π + 3σ