List of top Science Questions on Organic Chemistry asked in CBSE Class X

What is meant by functional group in carbon compounds? Write in tabular form the structural formula and the functional group present in the following compounds: 
(a) Ethanol 
(b) Ethanoic acid

What are structural isomers? Draw structural isomers of butane (\( C_4H_{10} \)). Give reason why propane has no structural isomers.
State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?
Select from the following a hydrocarbon having one C-C bond and one C=C bond: