A) 10 ml
B) 20 ml
C) 40 ml
D) 80 ml
Correct Answer: C
Solution :
\[{{N}_{1}}{{V}_{1}}\ =\ {{N}_{2}}{{V}_{2}}\] Þ \[0.2\times {{V}_{1}}=0.2\,\times 40\Rightarrow {{V}_{1}}=40\,ml\]
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