Explanation: The basicity of a compound depends on the availability of the lone pair of electrons on nitrogen for protonation. The order of basic strength is:
N(sp3, localized lone pair) > N(sp2, localized lone pair) > N(sp2, delocalized lone pair, aromatic).
Thus, the order of basic strength is:
Piperidine > Pyridine > Pyrrole.
Thus the correct answer is Option 1.
The incorrect statements regarding geometrical isomerism are:
(A) Propene shows geometrical isomerism.
(B) Trans isomer has identical atoms/groups on the opposite sides of the double bond.
(C) Cis-but-2-ene has higher dipole moment than trans-but-2-ene.
(D) 2-methylbut-2-ene shows two geometrical isomers.
(E) Trans-isomer has lower melting point than cis isomer.
Given below are two statements:
Statement (I):
are isomeric compounds.
Statement (II): are functional group isomers.
In the light of the above statements, choose the correct answer from the options given below: