How to apply the jobs after changing name from original markssheet?

My name is an old name so I have changed the name through affidavit, but could not get the clarity while applying for MNC companies and do I get any specific column for filling new name and original name(marks memo)?
I need a clarity. Could you please help me in this

Dear Salomi,
Mere giving affirmation through affidavit is not sufficient. You need to ensure that the change of name is published in the gazette of India. On the strength of the gazette, you can change your name on Aadhaar card, bank account and so on.
You can apply for the job and when the actual need for the verification of the certificates arises that time you need to show a copy of the extract of the gazette.
Thanks,
Dinesh Divekar