RRB Junior Engineer / DMS / CMA 2019 · Question 3505 of 3719
Explanation : When ice is converted into the water the particles in ice absorb heat energy during the process of conversion from ice to liquid water. Energy Energy is the ability of the body to do some work . The unit of energy is the same as that of work i.e. Joule (in S.I units). Conversion of water into Ice Molecules are constantly moving because they have energy . In a liquid form , water molecules have more energy than in a solid. They move around quickly, essentially bouncing off of one another As the liquid cools down, the amount of potential energy is reduced and the molecules start to move slower When the water temperature reaches around 0°C , the molecules stick together and form a solid-ice. Conversion of ice into water The ice would absorb energy from the warmer air around them. This absorbed energy would facilitate them to overcome the force of attraction holding them together, enabling them to slip out of the fixed position that they held as ice. The process in which a solids change to a liquid is called melting . The melting point is the temperature at which a solids change to liquid. Important Points The maximum density of water occurs at 4°C
Source: RRB JE 2019 (CBT 2) (ME) Previous Year Paper (31 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary
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