Organic Chemist...

During the estimation of C and H, the $$CO_{2}$$  produced is absorbed in 

How may $$\pi$$-bonds in following molecules:
a) $$C_{2}H_{6}$$   b) $$C_{2}H_{4}$$    c) $$C_{2}H_{2}$$    

The number of $$\pi $$ electrons in butadiene is 

The members of homologous series have.......

How many $$\sigma$$ & $$\pi$$ bonds are present in $$C_{2}H_{4}$$ molecule?

The IUPAC name of the compound is:

Which of the following diamagnetic species having only $$\pi$$ bond in the vapor phase?

The cyclic polymerization of methyl acetylene gives mesitylene. The number of sigma bonds in mesitylene is:

The number of $$\pi $$  - bonds and $$\sigma $$  bonds in the above structure respectively are:

The  members of  homologous series have: