Write an example for smoke producing things?
Construction of buildings
When vehicles move
Cutting of trees
Evaporation of water
What is the short form of Chloro-Flouro-Carbon?
C F C
C C F
F C C
C L C
After the industrial revolution in Britain the white moth changes into which colour?
Red moth
Green moth
Black moth
Blue moth
What are the main things the seeds want to germinate?
Minerals
Energy
Light, water, air
Cow dung
By inhaling polluted air what type of disease caused to the people?
Lungs
Heart
Kidney
Liver
Which type of fertilizers can be used?
Chemical fertilizers
Natural fertilizers
Pesticides
Insecticides
Why Taj mahal and Qutub minar lost the natural colour?
Acid rain
Hydro carbon
Air pollution
Sulphur
If dust particles fall on crops . What happened to the crops?
High yield
Medium level of yield
No yield
Low yield
How many percentage of oxygen present in the air?
28
27
21
20
Write an example for poisonous gas which produces from factory?
Carbon-Di-Oxide
Oxygen
Nitrogen
Hydrogen
