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
H2C=C=O
b
O=C=C=C=O
c
HC≡C−C≡CH
d
HC≡CH
answer is A.
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