AP EAMCET · Chemistry · p Block Elements (Group 13 & 14)
Which one of the following statements is not correct?
- A Moissan boron is amorphous
- B The reaction between boron and concentrated \(\mathrm{HNO}_3\) gives \(\mathrm{N}_2 \mathrm{O}\)
- C Amorphous boron on heating with oxygen forms \(\mathrm{B}_2 \mathrm{O}_3\)
- D Boron is a non-conductor of electricity
Answer & Solution
Correct Answer
(B) The reaction between boron and concentrated \(\mathrm{HNO}_3\) gives \(\mathrm{N}_2 \mathrm{O}\)
Step-by-step Solution
Detailed explanation
Boron reacts with concentrated \(\mathrm{HNO}_3\) to give orthoboric acid and nitrogen dioxide. \(\mathrm{B}+3 \mathrm{HNO}_3 \longrightarrow \mathrm{H}_3 \mathrm{BO}_3+3 \mathrm{NO}_2\)
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