7 Sci – The World of Metals and Non Metals – Test 1 (FREE MCQ Test)
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Which of the following methods is used to prevent the rusting of iron?
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What type of material is used to make the handles of cooking vessels to prevent heat transfer to the user?
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The property of materials by which they can be drawn into thin wires is called:
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Materials that allow electricity to flow through them easily, such as aluminum, iron, and copper, are called:
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What characteristic sound is produced when a metal object, like a spoon or coin, is dropped on the floor?
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Generally, the oxides formed when metals react with oxygen are what in nature?
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Which of the following materials is typically non-lustrous and not as hard as metals?
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What is the process of applying a protective layer of zinc metal on iron to prevent rusting called?
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When sulfur burns in air (oxygen) and the resulting gas (sulfur dioxide) is dissolved in water, what acid is formed?
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Generally, the oxides formed when non-metals react with oxygen are what in nature?
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Which non-metal is stored in water because it reacts vigorously and catches fire when exposed to atmospheric air?
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The property of metals that enables them to produce a ringing sound is called:
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What combination of substances is essential for the brown deposits (rust) to develop on objects made of iron?
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Why does an electrician often wear rubber gloves and use screwdrivers with plastic coverings?
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Which highly reactive metal is stored in kerosene because it reacts vigorously with oxygen and water, generating a lot of heat?
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What is the term for the gradual deterioration of metal surfaces caused by air, water, or other substances in the atmosphere?
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Which metal, despite being generally hard and solid, is found in a liquid state at room temperature?
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What material is so ductile that one gram of it can be drawn into a 2 kilometre-long wire?
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Which ancient Indian structure, dating back over 1600 years, is famous for its remarkable resistance to rusting despite being made of iron?
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Which property allows materials like copper, aluminum, and iron to be beaten into thin sheets?
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What is the name of the brown deposit that forms on objects made of iron?
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When magnesium ribbon burns with a dazzling white flame, it reacts with oxygen in the air to form what white powder?
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What is the collective term for the lustrous appearance shown by metals?
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Why are metal vessels generally preferred for cooking food?
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In the context of heat transfer, what term describes the movement of heat from one point to another within a material?
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