Answer:

1)Indian Space and Research Organization.

2) Deoxyribonucleic Acid.

3) Permanent Account Number

4) Basic input output system.

Answer:

1- ISRO:- Indian Space Research Organization

2- DNA:- Deoxyribonucleic Acid

3- PAN:- Permanent Account Number

4- BIOS:- Basic Input Output System

100% correct answer..

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