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ROHIT KUMAR from DPS , SURAT
Subject :NSO    Class : Class 5

Read the given statements.
1. I am present in air.
2. I enter your lungs when you breathe in.
3. I help in burning fire.
These statements are regarding _______.

A Carbon dioxide
B Hydrogen
C Nitrogen
D Oxygen


Ans 1:

pranavramesh from sri chaitanya techno school, Chennai
Class : Class 6
the answer is oxygen

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