C2h6--->c2h4--->c2h4cl2--->c2h4--->c2h5cl--->c4h10

Question

C2h6--->c2h4--->c2h4cl2--->c2h4--->c2h5cl--->c4h10

Answer 1

C2H6-->C2H4+H2
C2H4+CL2-->C2H4CL2
C2H4CL2-->C2H4+CL2
C2H4+HCL-->C2H5CL
2C2H5CL+2Na-->C4H10+2NaCL