Which of the following is the most stable diene?

When propene reacts with $H_{\mathrm{Cl}}$, what is the major product formed?

Which of the following ketones will give a positive $Iodoform$ test?

Which reagent is required to convert an alkene to a vicinal diol via syn addition?

Which of the following aromatic rings is alkylated most rapidly by chloroethane and ${\mathrm{AlCl}}_3$ in a Friedel-Crafts alkylation reaction?

What is the expected product when ${\mathrm{CH}}_3\mathrm{CH}=\mathrm{CH}{\mathrm{CH}}_3$ (2-butene) reacts with bromine (${\mathrm{Br}}_2$) in carbon tetrachloride (${\mathrm{CCl}}_4$)?

In a Diels-Alder reaction, which combination of diene and dienophile would produce $C_6{H}_{10}$ (cyclohexene) as the product?

What is the major product when propene reacts with $HBr$ under standard conditions?

Which of the following is an efficient synthesis of $1_{\mathrm{heptanol}}$?