Queastion :- A student was provided with samples of Mn, Zn, Na, Fe and Cu metals. He subjected them to some chemical treatment .Which one of these
A. will not displace hydrogen from dil. HCl?
B.will react only with steam to evolve Hydrogen gas?
C.will evolve hydrogen gas with dilute nitric acid?
D.will be displaced from its salt by all other metals?

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Solution

1. Copper is the least reactive metal in the list and will not displace hydrogen from HCl.
2. Copper will react with steam and release hydrogen.
3. Na being the most reactive will evolve hydrogen on reaction with dilute nitric acid.
4. Cu, as it is the least reactive in the list.

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1. Copper is the least reactive metal in the list and will not displace hydrogen from HCl.2. Copper will react with steam and release hydrogen. 3. Na being the most reactive will evolve hydrogen on reaction with dilute nitric acid.4. Cu, as it is the least reactive in the list.

1. Copper is the least reactive metal in the list and will not displace hydrogen from HCl.
2. Copper will react with steam and release hydrogen.
3. Na being the most reactive will evolve hydrogen on reaction with dilute nitric acid.
4. Cu, as it is the least reactive in the list.