A diabasic acid containing C,H and O was...

A diabasic acid containing C,H and O was found to contain C=26.7% and H=2.2%. The vapour density of its dimethyl ester was found to bc 73. The molecular formula of the acid is

A

`CH_(2) O_(2)`

B

`C_(2) H_(2) O_(4)`

C

`C_(3) H_(3) O_(4)`

D

`C_(2) H_(4) O_(4)`

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The correct Answer is:

B

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