Who was PC Ray’s father?

Which year did PC Ray’s family shift to Calcutta?

How many siblings does PC Ray have?

How many sisters and how many brothers?

Name his siblings?

What books did PC Ray’s library contain?

What did his father do?

What was PC Ray’s father called and what did it mean?

What all schools did PC Ray’s father setup in raruli ?

When was PC Ray born?

Full name of P.C ray was?

P.C Ray is recognised as?

In which year did PC Ray came back from Edinburgh?

From who's Biography Ray interest turned from Literature to Science?

How many Research papers he published at that time?

Name the book written by P.C Ray

How many volumes are there in the Book written by PC Ray?

Which subject was popularized by the book written by him?

Which company was founded by PC Ray?

In which year Mercurous Nitrate was discovered?