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Subjects
Science State Board
Class 6
Air
Atmosphere
6.
Discovery of gases
Exercise condition:
2
m.
Choose the best option
:
1
.
Who discovered nitrogen gas?
Daniel Rutherford
Jan Ingenhousz
Antoine Lavoisier
2
.
An example for the compression of air can be seen in __________.
hot air balloons
an open space
car tyres
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