Which of the following compounds will show geometrical isomerism?

IUPAC name of neopentane is

Which of the following contains three pairs of electrons in the valence shell?

Which one of the following statements is not correct for electrophile?

In which of the following compounds delocalisation is not possible?

Which among the following species is an ambident nucleophile?

Which among the following is an electrophile?

Which one of the following species is a nucleophile :

Resonance is due to:

Metamers of ethyl propionate are