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Question
  At room temperature and 1 atm presure, Dioxygen is blue-colored gas which is very essential for life - True or False?
Options:
A .  True
B .  False
C .  Both (A) and (B)
D .  Inspiration and combustion
Answer: Option B
:
B
Oxygen is a colorless, odorless gas required for sustenance of life.

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