If a member—
(a)becomes subject to any of the disqualifications mentioned in section 5; or
(b)is absent without excuse, sufficient in the opinion of the Council, from three consecutive meetings of the Council; or
(c)ceases to be enrolled on the Indian Medical Register in the case of a member referred to in clause (g) of sub-section (3) of section 3,
his seat shall thereupon become vacant.