Assertion: Electric field lines do not cut at any point.

Reason: At any point, there is only one direction of electric field.

Assertion: Electrostatic field lines never form closed loops.

Reason: Electrostatic field is a conservative field.

Assertion: If a conductor is given a certain, charge then no excess inner charge appears. 

Reason: In electrostatic condition field inside a conductor is zero.

Assertion: Electric field inside a metal surface is zero in electrostatic condition.

Reason: Electric charges exist only on the surface of conductor.

Assertion: Two charged particles at rest experiences only electrical force.

Reason: Charges at rest can only produce electric field.

Assertion: Electric force is the reason for existence of molecules.

Reason: At atomic level electric force is the most effective force or strongest force.

Assertion: For a conductor, when observed at very large distance, equipotential surfaces are plane. 

Reason: Electrostatic field is a conservative field.

Assertion:- Electric field lines are always perpendicular to the surface of conductor.

Reason:- Electric field is always perpendicular to equipotential surface.

Assertion:- Electrostatic field lines are perpendicular to the surface of conductor.

Reason:- Surfaces of a conductor are equipotential.