Question

H2O, CH4 ARE HOMOGENEOUS MOLECULES OR NOT ??

Answer 1

yes they are homogeneous molecules

Answer 2

i think you are confuse , homogeneous term is usually used for mixture having uniform composition throughout like Air. In case of molecule we  use heteroatomic or hetero nuclear (having different atom like H2O &CH4)  and homo atomic molecule ( molecule having same atom like O3,S8,F2,Cl2)