Hydrocarbons

The number of sigma (σ) and pi (π) pent-2-en-4-yne is

• 8σ bonds and 5π bonds

• 11σ bonds and 2π bonds

• 13σ bonds and no π bonds

• 10σ bonds and 3π bonds

Among the following, the reaction that proceeds through an electrophilic substitution, is:

An alkene "A" on reaction with O₃ and Zn–H₂O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene "A" gives "B" as the major product. The structure of product "B" is:

• H₃C—CH₂—CH(CH₂Cl)—CH₃

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