Login
Login
Sign up
Start
Mathmania
Teacher tutorials
TOP
Subjects
Bridge Course
Testworks
Subject updates
Ya+
News
Send feedback
See more
Contacts
About Us
Terms and Conditions
Privacy Policy
PDF chapter test
TRY NOW
Subjects
Assessments
Science TN
6th Std
Ch-11: Air
2.
Air and its uses
Exercise condition:
1
m.
Nitrogen is used in the food packaging industry because it __________.
provides colour to the food
provides oxygen to the food
adds proteins and minerals to the food
keeps the food fresh
Login
or
Fast registration
Previous exercise
Exit to the topic
Next exercise
Send feedback
Did you find an error?
Send it to us!