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The `NH_(3)` evolved from `2.8` gm sample of protein was absorbed in 45 ml of `0.2 M` `HNO_(3)`. The excess acid required 20 ml of `0.05 M` `NaOH %` o

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The `NH_(3)` evolved from `2.8` gm sample of protein was absorbed in 45 ml of `0.2 M` `HNO_(3)`. The excess acid required 20 ml of `0.05 M` `NaOH %` of N in the sample will be :
A. `16%`
B. `4%`
C. `(17xx4)/(7)%`
D. `8%`
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Correct Answer - B
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