Metals+reacting+with+Dilute+Acid

Here is a video of zinc metal reacting with dilute hydrochloric acid:

media type="file" key="zn and hcl.flv"

__Again, here are some questions:__

//**Q. What is the name of the gas produced?**//

//**Q. How would you test in a lab to find out what gas has been produced when the metal is reacted with dilute acid?**//