(1) If any Government other than the Central Government fails to make any nomination which it is entitled to make under sub-section (3) of section 4 within the time prescribed in that behalf, the Central Government may make the nomination itself.
     (2) Where a member of the Board dies, resigns, is removed, ceases to reside in India, or becomes incapable of acting, the authority or body entitled to nominate the member under sub-section (3) of section 4 may nominate a person to fill the vacancy; and where such nomination is not made within the time prescribed in that behalf, the Central Government on its own initiative, may make the nomination itself.
     (3) No act done by the Board shall be questioned on the ground merely of the existence of any vacancy in, or defect in the constitution of, the Board.