(a) is, or becomes of unsound mind and has been so declared by a competent Court; or

(b) is or has been convicted of any offence which, in the opinion of the Central Government, involves moral turpitude; or

(c) is, or at any time has been, adjudicated as insolvent or has suspended payment of his debts or has compounded with his creditors; or

(d) has, for any reason, been removed or dismissed from the service of-