Which of the following statements are incorrect regarding universe including earth?

(i) The Big Band theory attempts to explain to us the origin of universe.

(ii) The universe expanded and hence, the temperature came down. Hydrogen and Helium formed sometime later.

(iii) The gases condensed under gravitation and formed the galaxies of the present day universe.

(iv) There was no atmosphere on early earth.

(v) Water vapour, methane, carbon dioxide and ammonia released from molten mass covered the earth surface.

(vi) The UV rays from the sun brokeup water into Hydrogen and Oxygen and the lighter O 2 escaped.