GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When an iron nail gets rusted, iron oxide is formed
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with increase in the weight of the nail
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with decrease in the weight of the nail
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without any change in the weight of the nail
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without any change in colour or weight of the nail
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Explanation:
Detailed explanation-1: -The correct answer is Increases. When an iron nail gets rusted, the weight of the nail increases. It is because the layer of iron oxide is formed on the surface of the iron nail. This iron oxide layer is actually adding oxygen and hydrogen to the nail.
Detailed explanation-2: -Rust is iron-oxide-a molecule consisting of iron and oxygen. When rust forms, the mass of the iron object is increased by the mass of oxygen that has combined with some of the iron.
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