What is an emperical formula?

what is molecular fomula?

What is a displayed formula?

what is a structural formula?

What is a functional group?

What is a homologous series?

State the formula for the alkyl group:
1) Methyl
2) Ethyl
3) Propyl
4) Butyl
5) Pentyl
6) Hexyl

What is meant by the term structural isomerism?

What is meant by the term chain isomerism?

What is meant by the term position isomerism?

What is meant by the term functional group isomerism?

What are saturated hydro-carbons called?

What does petroleum mainly consist of?

What is a fraction?

Why is it said that a fractional tower has a negative temperature gradient?

What is broken in alkanes during cracking?

Why do larger hydrocarbons have higher boiling points?

Under what conditions does thermal cracking take place?

Under what conditions does catalytic cracking take place?

What types of products does thermal cracking make?

What types of products does catalytic cracking make?

what can the products of thermal cracking be used as?

what can the products of catalytic cracking be used as?

What are the economic reasons for cracking?

what are the products of incomplete combustion?

what are the products of complete combustion?

What are the different pollutants that an internal combustion engine produces?

What does the combustion of hydrocarbons containing sulphur lead to?

Name 3 greenhouse gasses.

What do un burnt hydrocarbons and oxides of nitrogen contribute to?

What catalysts are used in catalytic converters? and why?