Chemistry - Complete d-block Question with Solution | TestHub

ChemistryComplete d-blockd-blockEasy2 minPYQ_2019
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The metal that gives hydrogen gas upon treatment with both the acid as well as the base is

Options:

Answer:
A
Solution:

(i) Mg+HClMgCl2+H2    Mg+NaOHOH2+Na
(ii) Fe+HClFeCl3+H2   Fe+2OH-FeOH2+2Na
(iii) Zn is amphoteric in nature, so it reacts with acid as well as base.
Zn+HClZnCl2+12H2gZn+NaOHZnO2-2+H2g
(iv)
Hg+NaOHHg+HgO+H2OHg+2HClHg2Cl2+H2(g)

Stream:JEESubject:ChemistryTopic:Complete d-blockSubtopic:d-block
2mℹ️ Source: PYQ_2019

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