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7 Sci – The World of Metals and Non Metals – Test 1 (FREE MCQ Test)

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7 Sci – The World of Metals and Non Metals – Test 1 (FREE MCQ Test)

1 / 25

Which of the following methods is used to prevent the rusting of iron?

2 / 25

What type of material is used to make the handles of cooking vessels to prevent heat transfer to the user?

3 / 25

The property of materials by which they can be drawn into thin wires is called:

4 / 25

Materials that allow electricity to flow through them easily, such as aluminum, iron, and copper, are called:

5 / 25

What characteristic sound is produced when a metal object, like a spoon or coin, is dropped on the floor?

6 / 25

Generally, the oxides formed when metals react with oxygen are what in nature?

7 / 25

Which of the following materials is typically non-lustrous and not as hard as metals?

8 / 25

What is the process of applying a protective layer of zinc metal on iron to prevent rusting called?

9 / 25

When sulfur burns in air (oxygen) and the resulting gas (sulfur dioxide) is dissolved in water, what acid is formed?

10 / 25

Generally, the oxides formed when non-metals react with oxygen are what in nature?

11 / 25

Which non-metal is stored in water because it reacts vigorously and catches fire when exposed to atmospheric air?

12 / 25

The property of metals that enables them to produce a ringing sound is called:

13 / 25

What combination of substances is essential for the brown deposits (rust) to develop on objects made of iron?

14 / 25

Why does an electrician often wear rubber gloves and use screwdrivers with plastic coverings?

15 / 25

Which highly reactive metal is stored in kerosene because it reacts vigorously with oxygen and water, generating a lot of heat?

16 / 25

What is the term for the gradual deterioration of metal surfaces caused by air, water, or other substances in the atmosphere?

17 / 25

Which metal, despite being generally hard and solid, is found in a liquid state at room temperature?

18 / 25

What material is so ductile that one gram of it can be drawn into a 2 kilometre-long wire?

19 / 25

Which ancient Indian structure, dating back over 1600 years, is famous for its remarkable resistance to rusting despite being made of iron?

20 / 25

Which property allows materials like copper, aluminum, and iron to be beaten into thin sheets?

21 / 25

What is the name of the brown deposit that forms on objects made of iron?

22 / 25

When magnesium ribbon burns with a dazzling white flame, it reacts with oxygen in the air to form what white powder?

23 / 25

What is the collective term for the lustrous appearance shown by metals?

24 / 25

Why are metal vessels generally preferred for cooking food?

25 / 25

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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