SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Exothermic
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Endothermic
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Either A or B
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None of the above
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Detailed explanation-1: -When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.
Detailed explanation-2: -Exothermic reactions release energy (in the form of heat) into their surroundings. Examples of exothermic reactions include lighting matches, campfires, etc. In fact, water freezing into ice is also exothermic. As water releases heat into its surroundings, its temperature lowers to its freezing point and ice is formed.
Detailed explanation-3: -2) Rain: Condensation of water vapor into rain releasing energy in the form of heat is an example of an exothermic process.
Detailed explanation-4: -Answer and Explanation: The process of water freezing involves the movement of water molecules towards each other. Hence, the molecules come closer to each other, and in the process, they release energy. Hence, it is an exothermic process.
Detailed explanation-5: -Freezing ice cream is an exothermic process. Here heat is directed away by the solid ice, and ice cream freezes. Melting chocolate is an endothermic process.