WorksheetsComposition of Air and Nitrogen
Total questions: 12
Worksheet time: 5mins
Name
Class
Date
1.
________% Dust particles are present in air
a)
1
b)
10
c)
50
d)
100
2.
___________________ is used to make fire extinguishers.
a)
Nitrogen
b)
Silicon
c)
Oxygen
3.
What is the percentage composition of nitrogen in air?
a)
78%
b)
75%
c)
86%
4.
_______________ is one of the most abundantly found gases on earth.
a)
Oxygen
b)
Carbon dioxide
c)
Nitrogen
5.
Which of these two discovered Nitrogen?
a)
Daniel Rutherford
b)
Antoine Lavoiser
c)
Lise Meitner
d)
Mary Curie
6.
What is the nature of Nitrogen?
a)
Acidic
b)
Basic
c)
Neutral
7.
Air is classified as a__________.
a)
substance
b)
mixture
8.
Plants use ________________ for photosynthesis.
a)
Chlorine
b)
Nitrogen
c)
Carbon dioxide
9.
Nitrogen is an (a) gas
10.
The burning of fire needs
a)
carbon dioxide
b)
nitrogen
c)
oxygen
d)
water vapor
11.
The burning of fuel produces ______.
a)
Dew
b)
Wind
c)
Smoke
12.
Is nitrogen essential for plants?
a)
Yes
b)
No
100 %
