Propene

2−methylpropene

2−butene

2−methyl−2−butene

Ethene

Propene

1−butene

2−butene

2−butyne−1,4−diol

But−2−yne−1,2−diol

But−1−yne−1,4−diol

None of these

Propene

But−1−ene

But−2−ene

Pent−3−ene

Baeyer reagent

OsO₄

I₂⁄CH₃COOAg (wet)

I₂⁄CH₃COOAg (dry)