What is the type of bond present between the two carbon atoms in ethane?

The double bond between the two carbon atoms in ethylene consists of

The double bond between the two carbon atoms in ethylene consists of

Which type of bond exists between the two boron atoms in a diborane molecule ?

Which type of bond exists between the two boron atoms in a diborane molecule ?

As compared to ethylene, the bond distance between the two carbon atoms in acetylene is :

The number of sigma and pi -bonds present between the two carbon atoms in calcium carbide are respectively-

Number and type of bonds between two carbon atoms in CaC_(2) are :

The number and type of bonds between two carbon atoms in CaC_2 are :