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DRDO Scientist B Mock Test 2026 – Free Online Test Series

This page lists all 5 free DRDO Scientist B mock tests on Sarkari Results Now. A typical test has about 20 questions with a 20-minute timer. Tests follow the latest DRDO Scientist B exam pattern and are free to attempt. Attempt them in order, review the answers after each test and track your progress to find weak topics before the real exam.

All DRDO Scientist B Mock Tests

Sample DRDO Scientist B Questions

  1. The resonant frequency of a series RLC circuit is

    1. 1/(2π√(L/C))
    2. 2π√(LC)
    3. 1/(2πLC)
    4. 1/(2π√(LC))

  2. What is the output of d = {'a': 1}; print(d.get('b', 0)) in Python?

    1. KeyError
    2. 0
    3. None
    4. 1

  3. 17 का वर्ग कितना होता है?

    1. 287
    2. 317
    3. 288
    4. 289

  4. Slew rate of an op-amp is expressed in

    1. dB
    2. V/A
    3. Hz
    4. V/µs

Attempt the full test above to see the correct answers.