[batuman (OP)]

Can we make a copper magnet which can attract hydrogen molecules?

[evan_au]

Are you asking about a "rice-puller"?
https://www.quora.com/What-is-rice-puller-metal

Presumably, because rice is a carbohydrate, a copper pot which attracts hydrogen sounds more scientific than one which attracts rice?

[chiralSPO]

Well, you can pull the copper into thin wire, coil it up, cool it down to liquid helium temperatures and run huge amounts of current through what is now a super-conductive solenoid. Hydrogen molecules are diamagnetic, but if you meant hydrogen atoms (which are paramegnetic, albeit very reactive species), then yes you can construct a very strong copper magnet capable of attracting hydrogen (weakly).

Somehow, though, I doubt that this is what you are after.