Q.
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
O2 only
b
O2, NO2
c
NO2 only
d
N2O, O2
answer is B.
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