how would you obtain the line spectrum of hydrogen?

What is Line spectrum of hydrogen?

Line Spectrum Of Hydrogen Atom

How do you obtain a spectrum of light?

When is k_(alpha) line in the emission spectrum of hydrogen atom obtained ? Calculate the frequency of the photon emitted during this transition.

When is H_(alpha) line of the Balmer series in the emission spectrum of hydrogen atom obtained ?

How would you obtain Ethylene compounds from acetylene?

How would you obtain ethene from ethanol? Give equation.