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NMDC Junior Officer Mock Test 2026 – Free Online Test Series

This page lists all 20 free NMDC Junior Officer mock tests on Sarkari Results Now. A typical test has about 20 questions with a 20-minute timer. Tests follow the latest NMDC Junior Officer 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 NMDC Junior Officer Mock Tests

Sample NMDC Junior Officer Questions

  1. A Carnot refrigerator operates between 250 K and 300 K. Its COP is / एक कार्नो रेफ्रिजरेटर 250 K और 300 K के बीच कार्य करता है। इसका COP है:

    1. 0.2
    2. 1.2
    3. 5
    4. 6

  2. Three resistors of 10 ohm, 20 ohm and 20 ohm are connected in parallel. The equivalent resistance is / 10 ओम, 20 ओम और 20 ओम के तीन प्रतिरोधक समानांतर में जुड़े हैं। तुल्य प्रतिरोध है:

    1. 10 ohm (10 ओम)
    2. 2 ohm (2 ओम)
    3. 5 ohm (5 ओम)
    4. 50 ohm (50 ओम)

  3. The Coriolis component of acceleration is given by / त्वरण का कोरिओलिस घटक दिया जाता है:

    1. ωv
    2. ωv/2
    3. 2ωv
    4. ω²r

  4. How many times do the hands of a clock coincide in 12 hours? / घड़ी की दोनों सुइयाँ 12 घंटे में कितनी बार एक-दूसरे को ढकती हैं?

    1. 10
    2. 22
    3. 12
    4. 11

Attempt the full test above to see the correct answers.