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Functions of Gases in Air 2 (Form 1, Chemistry)
 

Froggy Jumps

Functions of Gases in Air 2 (Form 1, Chemistry)Online version

Quiz on oxygen, rusting, and rust prevention.

by YAKILI LMS
1

What is the main element that makes up about 21% of air?

2

Which gas in air is most responsible for supporting combustion?

3

What percentage of oxygen is typically found in dry air?

4

Which gas is the main portion of air besides oxygen?

5

Rust forms mainly on which metal?

6

What is rusting a chemical reaction of iron with?

7

Which condition promotes rusting?

8

Which gas in air can cause fires to burn more vigorously if present?

9

What is the definition of rusting?

10

Which gas is least reactive and makes up most of air?

11

Which gas can dissolve in water to form carbonic acid?

12

Which gas helps preserve fresh fruits and slows spoilage when used in packaging in some cases?

13

Which gas is used to test for the presence of oxygen by relighting a glowing splint?

14

Defining rusting, which technology slows rust by removing water environment?

15

Which method prevents rusting by coating iron?

16

A coating of oil on iron helps by doing what?

17

Which metal often forms rust when exposed to air and water?

18

Which gas in air is relatively inert and does not react easily?

19

Which form of rust prevention uses a barrier layer?

20

Which material can act as a rust inhibitor by removing moisture?

21

What is the purpose of galvanizing iron?

22

Which gas in air helps to extinguish some fires if present in high levels?

23

Which gas is used in some food packaging to slow spoilage?

24

Which form of rust prevention uses an electric current to protect steel?

25

What happens when oxygen reacts with iron in the presence of water?

26

Which gas combination is essential for rust to occur on iron?

27

Which of these is a rust prevention method that blocks air contact?

28

Which property of air is crucial in rust formation?

29

Which gas makes up about 78% of air?

30

What is the role of oxygen in metal corrosion?

31

Which gas is used to indicate oxygen presence in a test?

32

Which practice reduces rust by removing water from surroundings?

33

What form of corrosion occurs on iron surfaces?

34

Which gas supports most combustion in air?

35

Which is a property of rusting?

36

Which gas is often used to preserve foods by reducing oxidation?

37

Which prevention method uses a barrier like paint or plastic?

38

What is the effect of carbon dioxide in air on corrosion?

39

Which practice helps prevent rust by reducing exposure?

40

Which gas in air is the essential reactant for burning?

41

Which rust prevention method uses a sacrificial metal?

42

Rusting is an example of which type of process?

43

Which gas slows metal oxidation when used to fill a container?

44

Which gas is commonly removed to prevent rust in closed systems?

45

Which is NOT a rust prevention method?

46

A glowing splint re-ignites in the presence of which gas?

47

Which gas is often used to create inert atmospheres in labs?

48

Which factor promotes rusting in metals like iron?

49

Which gas is colorless, odorless, and makes up most of air?

50

Which protective method coats iron with a thin metal layer?

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