The compound which are only made up of hydrogen and carbon .
A compound made up of hydrogen n carbon

In which only hydogen & carbon present
The compound which have only hydrogen and oxygen

Compounds of carbon and hydrogen are called hydrocarbons. Example, methane, ethane etc.Methane is the simplest hydrocarbon possible. It is released as a gas from decomposing bodies and from the intestinal tracts of many animals. Its formula is CH4. A methyl group, with the formula CH3, has one free bond to join something else.Hydrocarbons are organic compounds that are made of only hydrogen and carbon atoms. They are found in many places, including crude oil and natural gas.