The selection process for DRDO entry is of 2 tiers.

Tier 1 has 150 questions for 150 marks for a duration of 120 minutes covering topics like Quantitative ability/aptitude, General Intelligence and Reasoning ability, General Awareness, English language and General Science.

Tier 2 has 100 questions for 100 marks over a duration of 90 minutes covering the subject of your interest.