Login
Home
TOP
Send feedback
Login
Subjects
Science CBSE Homework Assignments
Class 10
Our environment
Ozone layer depletion
1.
Ozone layer depletion, its causes and effects
Question:
3
m.
Choose the correct answer
:
1
.
Ozone is a __________ gas.
all of the above
pale blue
pungent
2
.
CFCs are __________ and are not destroyed by natural processes.
extremely stable
less stable
Login
or
Fast registration
Previous task
Exit to the topic
Next task
Send feedback
Did you find an error?
Send it to us!