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  9. Q16

RRB Group D (Level-1 posts) 2026 · Question 16 of 95

When a drop of ink is added to water and left undisturbed, the ink gradually spreads throughout the water. Which property of matter does this observation best demonstrate?

  1. AFixed positions of particles
  2. BSpaces between particles
  3. CAttraction between particles
  4. DContinuous movement of particlesCorrect

Answer: D. Continuous movement of particles

Official answer key verified. Detailed explanation coming soon.

Source: RRB Group D 2025 question paper and answer key PDF English Feb 9 2026 Shift 2 · official-answer-key

← Q15View full paper (95 questions)Q17 →

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