Hello,

No you will not be eligible to apply for DRDO recruitment process for scientist B post because to be eligible you will first have to complete your graduation with at least First Class Bachelor’s Degree only then you will be able to apply with a valid GATE score. So you cannot apply in 3rd year of b.tech for DRDO. You can use your 3rd year GATE score for later year of DRDO recruitment too. So even if you get less score in the GATE exam which you will give it in your 4th year you will still have a chance by using your GATE score that you give in 3rd year. But unless you complete your B.tech you will not be eligible.