Solution:
The above statement is true.Dilute can be kept in a copper container. This is because copper is less reactive than hydrogen, and hence no reaction will take place. On the other hand, dilute cannot be kept in a copper container; rather, it will be kept in an aluminium container as it forms the layer of aluminium oxide, which does not react further and hence no reaction will take place. Hence these chemicals can be kept in the desired container as given above.
