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Home » Which of the following reactions is the metal displacement reaction? Choose the right option.(1) (2) (3) (4)
Which of the following reactions is the metal displacement reaction? Choose the right option.
(1) 2 \mathrm{KClO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{KCl}+3 \mathrm{O}_{2}
(2) \mathrm{Cr}_{2} \mathrm{O}_{3}+2 \mathrm{Al} \stackrel{\Delta}{\longrightarrow} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{Cr}
(3) \mathrm{Fe}+2 \mathrm{HCl} \rightarrow \mathrm{FeCl}_{2}+\mathrm{H}_{2} \uparrow
(4) 2 \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2} \rightarrow 2 \mathrm{PbO}+4 \mathrm{NO}_{2}+\mathrm{O}_{2} \uparrow
Chemistry
Which of the following reactions is the metal displacement reaction? Choose the right option.
(1) 2 \mathrm{KClO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{KCl}+3 \mathrm{O}_{2}
(2) \mathrm{Cr}_{2} \mathrm{O}_{3}+2 \mathrm{Al} \stackrel{\Delta}{\longrightarrow} \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{Cr}
(3) \mathrm{Fe}+2 \mathrm{HCl} \rightarrow \mathrm{FeCl}_{2}+\mathrm{H}_{2} \uparrow
(4) 2 \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2} \rightarrow 2 \mathrm{PbO}+4 \mathrm{NO}_{2}+\mathrm{O}_{2} \uparrow

Answer is (2)

Both reactions (1) and (2) are examples of decomposition reactions.

Reactions (3) and (4), both are examples of displacement reactions, while reaction (3) is an example of metal displacement reaction.

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