Nitrogen and Its Compounds
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CHXI11:THE P-BLOCK ELEMENTS

316721 The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of

1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
CHXI11:THE P-BLOCK ELEMENTS

316722 Assertion :
Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst.
Reason :
In nitrogen molecule, there is extensive delocalization of electrons.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI11:THE P-BLOCK ELEMENTS

316723 On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get

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

316724 On heating ammonium dichromate and barium azide separately we get

1 \(\mathrm{N}_{2}\) in both cases
2 \(\mathrm{N}_{2}\) with ammonium dichromate and \(\mathrm{NO}\) with barium azide
3 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{N}_{2}\) with barium azide
4 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{NO}_{2}\) with barium azide
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CHXI11:THE P-BLOCK ELEMENTS

316721 The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of

1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
CHXI11:THE P-BLOCK ELEMENTS

316722 Assertion :
Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst.
Reason :
In nitrogen molecule, there is extensive delocalization of electrons.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI11:THE P-BLOCK ELEMENTS

316723 On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get

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

316724 On heating ammonium dichromate and barium azide separately we get

1 \(\mathrm{N}_{2}\) in both cases
2 \(\mathrm{N}_{2}\) with ammonium dichromate and \(\mathrm{NO}\) with barium azide
3 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{N}_{2}\) with barium azide
4 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{NO}_{2}\) with barium azide
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CHXI11:THE P-BLOCK ELEMENTS

316721 The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of

1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
CHXI11:THE P-BLOCK ELEMENTS

316722 Assertion :
Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst.
Reason :
In nitrogen molecule, there is extensive delocalization of electrons.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI11:THE P-BLOCK ELEMENTS

316723 On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get

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

316724 On heating ammonium dichromate and barium azide separately we get

1 \(\mathrm{N}_{2}\) in both cases
2 \(\mathrm{N}_{2}\) with ammonium dichromate and \(\mathrm{NO}\) with barium azide
3 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{N}_{2}\) with barium azide
4 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{NO}_{2}\) with barium azide
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CHXI11:THE P-BLOCK ELEMENTS

316721 The \(\mathrm{CN}^{-}\)ion and \(\mathrm{N}_{2}\) are isoelectronic. But in contrast to \(\mathrm{CN}^{-}, \mathrm{N}_{2}\) is chemically inert because of

1 Low bond energy
2 Absence of bond polarity
3 Unsymmetrical electron distribution
4 Presence of more number of electrons in bonding orbitals
CHXI11:THE P-BLOCK ELEMENTS

316722 Assertion :
Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst.
Reason :
In nitrogen molecule, there is extensive delocalization of electrons.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI11:THE P-BLOCK ELEMENTS

316723 On heating a mixture of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{KNO}_{2}\) we get

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

316724 On heating ammonium dichromate and barium azide separately we get

1 \(\mathrm{N}_{2}\) in both cases
2 \(\mathrm{N}_{2}\) with ammonium dichromate and \(\mathrm{NO}\) with barium azide
3 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{N}_{2}\) with barium azide
4 \(\mathrm{N}_{2} \mathrm{O}\) with ammonium dichromate and \(\mathrm{NO}_{2}\) with barium azide
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