5. Delegation of powers. The Central Government may, by notified order, direct that 1[ the power to make orders or issue notifications under section 3] shall, in relation to such matters and subject to such conditions, if any, as may be specified in the direction, be exercisable also by--
such officer or authority subordinate to the Central Government, or
such State Government or such officer or authority sub- ordinate to a State Government, as may be specified in the direction.