What is the direction of electric field intensity ?

Choose the incorrect statement :

$(a)$ The electric lines of force entering into a Gaussian surface provide negative flux.

$(b)$ A charge ' $q$ ' is placed at the centre of a cube. The flux through all the faces will be the same.

$(c)$ In a uniform electric field net flux through a closed Gaussian surface containing no net charge, is zero.

$(d)$ When electric field is parallel to a Gaussian surface, it provides a finite non-zero flux.

Choose the most appropriate answer from the options given below

A cube of a metal is given a positive charge $Q$. For the above system, which of the following statements is true

An electric dipole is put in north-south direction in a sphere filled with water. Which statement is correct

An electric charge $q$ is placed at the centre of a cube of side $\alpha $. The electric flux on one of its faces will be

Give reason : ''If net flux assocaited with closed surface is zero, then net charge enclosed by that surface is zero''.