Which of the following molecules, in pure form, is (are) unstable at room temperature ?

Most powerful leaving group in following

Which one of the following compounds will be most easily attacked by an electrophile ?

How many products will be aromatic ion when AgNO3 reacts with the following compounds?

Number of π electrons present in naphthalene is

The maximum number of carbon atoms arranged linearly in the molecule CH3–C≡C– CH=CH2 is -