Match the following list of microbes and their importance -

Column I	Column II
(a) Sacharomyces cerevisiae	(i) Production of immunosuppressive agent
(b) Monascus purpureus	(ii) Ripening of Swiss cheese
(c) Trichoderma polysporum	(iii) Commercial production of ethanol
(d) Propionibacterium sharmanii	(iv) Production of blood cholesterol lowering agents

The DNA molecule to which the gene of interest is integrated for cloning is called -

The sum of coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl (where en is ethylenediamine) is

The hybridization involved in complex [Ni(CN)₄]^$$2-$$ is (At. No. Ni = 28)