In which of the following the number of carbon atoms are not the same when carboxylic acid is obtained by oxiadation ?

In which of the following, the number of carbon atoms does not remain same when carboxylic acid is obtained from it by oxidation?

In which of the following all carbon atoms are of same hybridisation

Which of the following contain same number of carbon atoms as in 6 g of carbon-12?

Which of the following contain same number of carbon atoms as in 6g of carbon -12.

The number of carbon atom in citric acid is