The bond angle in ethylene is $............$ $^o$.

Explain the reactivity of alkenes towards electrophilic reagents.

Which of the products will be the major product in the reaction given below?
$CH_3CH=CH_2 + HI \to CH_3CH_2CH_2I_{(A)} + CH_3CHICH_{3(B)}$

The addition of $HI$ in the presence of peroxide catalyst does not follow anti-Markovnikov's rule because

For the reaction: $CH_2=CH-CH=CH_2 + HBr (1 \text{ eq}) \xrightarrow{80^{\circ}C} P_1 + P_2$ (where $P_1$ is the major product),identify $P_1$.

Reagent $(A)$ in the reaction is