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The molarity of NaOH solution obtained by dissolving 4g of it in 250 mL solution is :

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The molarity of NaOH solution obtained by dissolving 4g of it in 250 mL solution is :
A. 0.4 M
B. 0.8 M
C. 0.2 M
D. 0.1 M
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Correct Answer - A
Molarity (M) `= ((4.0)//(40 "g mol"^(-1)))/((250//1000L))`
`= 0.4 "mol L"^(-1) = 0.4 M`.
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