SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the mass of one mole of a pure substance
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the process of burning something
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the SI base unit used to measure the amount of a substance
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the study of energy changes that occur during chemical reactions and changes in state
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Detailed explanation-1: -Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer. The fuel can be a solid, liquid, or gas, although for airplane propulsion the fuel is usually a liquid.
Detailed explanation-2: -Combustion is the burning of a substance at high temperature in the presence of atmospheric oxygen. It is an exothermic chemical process in which there is evolution of heat along with the production of carbon dioxide and water.
Detailed explanation-3: -combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.
Detailed explanation-4: -Hence, combustion is a chemical process. Because, here the substance is rapidly reacting with oxygen and there is a formation of heat. And this reaction is taking place between the fuel and an oxidant.