GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The matter can be created and destroyed
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That matter cannot be created or destroyed
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That mater cannot be created but can be destroyed
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That matter can be created but cannot be destroyed
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Detailed explanation-1: -The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.
Detailed explanation-2: -The law of conservation of mass states that matter can neither be created nor be destroyed in a chemical reaction, i.e. mass before and after the chemical reaction is same.
Detailed explanation-3: -The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.
Detailed explanation-4: -The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.