Chemistry
Following is a list of metals :
Na, Zn, Fe, Ag, Pb, Hg, Cu.
Answer the questions that follow :
(a) Which of the above metals can displace all the metals from their salt solution ?
(b) Name one of the above metals which cannot react with dilute acid to produce hydrogen gas.
(c) Name one of the above metals which reacts with oxygen upon heating to produce an amphoteric oxide.
(d) Arrange the above metals in a decreasing order of their reactivity.
Chemical Reaction
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Answer
(a) Na, that is Sodium can displace other metals from their salt solutions because it is the most reactive.
(b) Silver (Ag) is very low in the reactivity series, so it does not displace hydrogen from dilute acids.
(c) Zinc (Zn) reacts with oxygen upon heating to produce an amphoteric oxide.
(d) The given metals in a decreasing order of their reactivity are:
Na > Zn > Fe > Pb > Cu > Hg > Ag
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