What is percentage of oxygen in air?

OXYGEN

Quiz
•
Science
•
6th Grade
•
Medium
Malika Begum
Used 9+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
21%
22%
23%
24%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which gas helps in burning?
Nitrogen
Oxygen
sulfur
Carbon dioxide
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diver takes this gas cylinder with him to swim in a deep sea
nitrogen
oxygen
Carbon dioxide
ammonia
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following gas is used in acetylene torch for welding?
Oxygen
Hydrogen
Carbon dioxide
Neon
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Without oxygen_______cannottakeplace in living things.
respiration
combustion
phptosynthesis
excretion
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxygen is a_______ gas
reactive
nonreactive
inert
dangerous
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Acetylene torch uses this gas for welding metals
nitrogen
oxygen
neon
argon
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