Nitrogen and Its Compounds
CHXI11:THE P-BLOCK ELEMENTS

316742 In the preparation of \(\mathrm{HNO}_{3}\), we get \(\mathrm{NO}\) gas by catalytic oxidation of ammonia. The moles of \(\mathrm{NO}\) produced by the oxidation of two moles of \(\mathrm{NH}_{3}\) will be

1 2
2 3
3 4
4 6
CHXI11:THE P-BLOCK ELEMENTS

316743 "A " obtained by Ostwald's method involving air oxidation of \(\mathrm{NH}_{3}\), upon further air oxidation produces " B ". " B " on hydration forms an oxoacid of nitrogen along with evolution of " A ". The oxoacid also produces "A" and gives positive brown ring test.
Identify A and B , respectively.

1 \(\mathrm{NO}, \mathrm{NO}_{2}\)
2 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{5}\)
3 \(\mathrm{N}_{2} \mathrm{O}_{3}, \mathrm{NO}_{2}\)
4 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{4}\)
CHXI11:THE P-BLOCK ELEMENTS

316744 The reaction of zinc with dilute and concentrated nitric acid respectively produces:

1 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{\rm{NO}}\)
2 \({\rm{NO}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{N}}_{\rm{2}}}{\rm{O}}\,\,{\rm{and}}\,\,{\rm{N}}{{\rm{O}}_{\rm{2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316745 In the reaction of gold with aquaregia, oxidation state of nitrogen changes from

1 +4 to +2
2 +6 to +4
3 +5 to +2
4 \({\rm{ + 3}}\,\,{\rm{to}}\,\,{\rm{ + 1}}\)
CHXI11:THE P-BLOCK ELEMENTS

316742 In the preparation of \(\mathrm{HNO}_{3}\), we get \(\mathrm{NO}\) gas by catalytic oxidation of ammonia. The moles of \(\mathrm{NO}\) produced by the oxidation of two moles of \(\mathrm{NH}_{3}\) will be

1 2
2 3
3 4
4 6
CHXI11:THE P-BLOCK ELEMENTS

316743 "A " obtained by Ostwald's method involving air oxidation of \(\mathrm{NH}_{3}\), upon further air oxidation produces " B ". " B " on hydration forms an oxoacid of nitrogen along with evolution of " A ". The oxoacid also produces "A" and gives positive brown ring test.
Identify A and B , respectively.

1 \(\mathrm{NO}, \mathrm{NO}_{2}\)
2 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{5}\)
3 \(\mathrm{N}_{2} \mathrm{O}_{3}, \mathrm{NO}_{2}\)
4 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{4}\)
CHXI11:THE P-BLOCK ELEMENTS

316744 The reaction of zinc with dilute and concentrated nitric acid respectively produces:

1 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{\rm{NO}}\)
2 \({\rm{NO}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{N}}_{\rm{2}}}{\rm{O}}\,\,{\rm{and}}\,\,{\rm{N}}{{\rm{O}}_{\rm{2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316745 In the reaction of gold with aquaregia, oxidation state of nitrogen changes from

1 +4 to +2
2 +6 to +4
3 +5 to +2
4 \({\rm{ + 3}}\,\,{\rm{to}}\,\,{\rm{ + 1}}\)
CHXI11:THE P-BLOCK ELEMENTS

316742 In the preparation of \(\mathrm{HNO}_{3}\), we get \(\mathrm{NO}\) gas by catalytic oxidation of ammonia. The moles of \(\mathrm{NO}\) produced by the oxidation of two moles of \(\mathrm{NH}_{3}\) will be

1 2
2 3
3 4
4 6
CHXI11:THE P-BLOCK ELEMENTS

316743 "A " obtained by Ostwald's method involving air oxidation of \(\mathrm{NH}_{3}\), upon further air oxidation produces " B ". " B " on hydration forms an oxoacid of nitrogen along with evolution of " A ". The oxoacid also produces "A" and gives positive brown ring test.
Identify A and B , respectively.

1 \(\mathrm{NO}, \mathrm{NO}_{2}\)
2 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{5}\)
3 \(\mathrm{N}_{2} \mathrm{O}_{3}, \mathrm{NO}_{2}\)
4 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{4}\)
CHXI11:THE P-BLOCK ELEMENTS

316744 The reaction of zinc with dilute and concentrated nitric acid respectively produces:

1 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{\rm{NO}}\)
2 \({\rm{NO}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{N}}_{\rm{2}}}{\rm{O}}\,\,{\rm{and}}\,\,{\rm{N}}{{\rm{O}}_{\rm{2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316745 In the reaction of gold with aquaregia, oxidation state of nitrogen changes from

1 +4 to +2
2 +6 to +4
3 +5 to +2
4 \({\rm{ + 3}}\,\,{\rm{to}}\,\,{\rm{ + 1}}\)
CHXI11:THE P-BLOCK ELEMENTS

316742 In the preparation of \(\mathrm{HNO}_{3}\), we get \(\mathrm{NO}\) gas by catalytic oxidation of ammonia. The moles of \(\mathrm{NO}\) produced by the oxidation of two moles of \(\mathrm{NH}_{3}\) will be

1 2
2 3
3 4
4 6
CHXI11:THE P-BLOCK ELEMENTS

316743 "A " obtained by Ostwald's method involving air oxidation of \(\mathrm{NH}_{3}\), upon further air oxidation produces " B ". " B " on hydration forms an oxoacid of nitrogen along with evolution of " A ". The oxoacid also produces "A" and gives positive brown ring test.
Identify A and B , respectively.

1 \(\mathrm{NO}, \mathrm{NO}_{2}\)
2 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{5}\)
3 \(\mathrm{N}_{2} \mathrm{O}_{3}, \mathrm{NO}_{2}\)
4 \(\mathrm{NO}_{2}, \mathrm{~N}_{2} \mathrm{O}_{4}\)
CHXI11:THE P-BLOCK ELEMENTS

316744 The reaction of zinc with dilute and concentrated nitric acid respectively produces:

1 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{\rm{NO}}\)
2 \({\rm{NO}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
3 \({\rm{N}}{{\rm{O}}_{\rm{2}}}\,\,{\rm{and}}\,\,{{\rm{N}}_{\rm{2}}}{\rm{O}}\)
4 \({{\rm{N}}_{\rm{2}}}{\rm{O}}\,\,{\rm{and}}\,\,{\rm{N}}{{\rm{O}}_{\rm{2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316745 In the reaction of gold with aquaregia, oxidation state of nitrogen changes from

1 +4 to +2
2 +6 to +4
3 +5 to +2
4 \({\rm{ + 3}}\,\,{\rm{to}}\,\,{\rm{ + 1}}\)
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