A) \[400c{{m}^{3}}\]
B) \[500c{{m}^{3}}\]
C) \[450c{{m}^{3}}\]
D) \[100c{{m}^{3}}\]
Correct Answer: A
Solution :
To get decinormal concentration, suppose the total volume of water =x \[\therefore \] \[100c{{m}^{3}}\times 0.5N=x+0.1N\] \[\therefore \] \[x=\frac{100\times 0.5}{0.1}=500c{{m}^{3}}\] Therefore the volume of water added = Total volume \[-100\text{ }c{{m}^{3}}\] \[=500-100=400\text{ }c{{m}^{3}}\]
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