RRB Junior Engineer / DMS / CMA 2019 · Question 3696 of 3719
Explanation: Solids: Solids is the phase of matter in which the constituent particles are closely packed . Solids are the hardest state of matter among all three. Solids have fixed volume and shape. The translational and rotational motion of the constituent particles is restricted and only vibrational motion is possible . In solids the intermolecular spaces are minimum and intermolecular forces of attraction are maximum. Liquids : The properties of liquids are intermediate between liquids and solids and gases. Liquids have fixed volume but take the shape of the vessel in which they are put. In liquids, the intermolecular forces are weaker than solids but are strong enough to hold the particles together. Gases : In this state of matter, the constituent particles are free for random movement in all directions. The intermolecular spaces are the maximum in gases and the intermolecular forces of attraction are minimum. Gases neither have definite volume nor they have a definite shape. They occupy shape and volume of the vessel in which they are put. Other two states of matter : Plasma : The highly ionised state of gas. Bose-Einstein Condensate : The gas of Bosons (fundamental particles) cooled to absolute zero (almost).
Source: RRB JE 2019 (CBT 2) (IT) Previous Year Paper (30 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary
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