Does chromatin contain non-histone protein?

Q. do chromosome also contain histone proteins or it is present in chromatin only ?

Q. Read the assertion and reason carefully to mark the correct option in question.

Assertion: Interphase nucleus has a loose and distinct network of fibre called chromatin.

Reason: Chromatin contains $RNA,DNA$ and histone proteins but non-histone proteins are absent.

Q. Subunit of chromatin composed of a short length of DNA wrapped around a core of histone proteins is called

Q. Pick the incorrect statements among the following:
(i) A typical nucleosome contains 400 bp of DNA.
(ii) The positively charged DNA is wrapped around the negatively charged histone octamer to form a structure called nucleosome.
(iii) Histones are rich in the basic amino acid residues like asparagine and valine.
(iv) The packing of chromatin at higher level requires an additional set of proteins that collectively are referred to as non-histone chromosomal proteins.