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Which one of the following statements is not correct?
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The correct answer is:
The reaction between boron and concentrated $\mathrm{HNO}_3$ gives $\mathrm{N}_2 \mathrm{O}$
Boron reacts with concentrated $\mathrm{HNO}_3$ to give orthoboric acid and nitrogen dioxide.
$\mathrm{B}+3 \mathrm{HNO}_3 \longrightarrow \mathrm{H}_3 \mathrm{BO}_3+3 \mathrm{NO}_2$
$\mathrm{B}+3 \mathrm{HNO}_3 \longrightarrow \mathrm{H}_3 \mathrm{BO}_3+3 \mathrm{NO}_2$
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