RRB RPF RPSF SI and CONS Model Papers 7 with solutions

Question : 97 of 120

Marks: +1, -0

In which type of chemical reaction a more reactive metal can replace a less reactive metal?

Displacement
Neutralization
Decomposition
Redox

Solution:

(1) Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. For example, when zinc metal is added to lead nitrate solution, the more reactive zinc displaces the less reactive lead from solution.
This is shown by :

{Zn}( {s})+ {Pb} ( {NO}_{3} )_{2}( {aq}) →{Zn} ( {NO}_{3} )_{2}( {aq})+ {Pb}( {s})

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