Benzos show up on drug tests, yes. I'd start drinking water by the jug-full while you're ahead.
Yes. Both are benzodiazepines, so they are in the same family. Drug tests which are sensitive enough to differentiate the two are extremely expensive, and chances are whatever test you're taking is...
yes cuz they both benzos valium xanax klonopin would also
If the tester is screening for benzodiazepines (common in a pre-employment drug screen, for example), Valium will be detected.
as a benzo