Subject to such schemes as may be framed by the Central Government, every pregnant woman and lactating mother shall be entitled to—

   (a)  meal, free of charge, during pregnancy and six months after the child birth, through the local anganwadi, so as to meet the nutritional standards specified in Schedule II; and

   (b)  maternity benefit of not less than rupees six thousand, in such instalments as may be prescribed by the Central Government:

   Provided that all pregnant women and lactating mothers in regular employment with the Central Government or State Governments or Public Sector Undertakings or those who are in receipt of similar benefits under any law for the time being in force shall not be entitled to benefits specified in clause (b).