How do you distinguish between `CH_(3)CH=CHCl, CH_(3)CH_(2)CH_(2)Cl and CH_(2)=CH-CH_(2)Cl` ?

Explanation

The Cl in `CH_(2)= CHCH_(2)Cl` is very reactive. This reacts rapidly with `AgNO_(3)` in the cold to give a white precipitate of AgCl.
`CH_(3)CH_(2)CH_(2)Cl` gives white precipitate when warmed with `AgNO_(3)` as it is comparatively less relative, `CH_(3)CH= CHCl` is inert and does not form white precipitate with `AgNO_(3)`.