Where a person has been detained in pursuance of an order of detention under sub-section (1) of section 3 which has been made on two or more grounds, such order of detention shall be deemed to have been made separately on each of such grounds and accordingly—

1. such order shall not be deemed to be invalid or inoperative merely because one or some of the grounds is or are—
2. the Government or officer making the order of detention shall be deemed to have made the order of detention under the said sub-section (1) after being satisfied as provided in that sub-section with reference to the remaining ground or grounds.