According to the kinetic-molecular theory, the collision between two ideal gas particles is a result of
neither attraction nor repulsion.
repulsion from the wall of the container.
repulsion from other gas particles.
attraction between the two particles.

It is a result of neither attraction nor repulsion. They interact freely without any kinetic or chemical reaction.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be