Miscellaneous Questions based on only Group – 15 Elements
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CHXI11:THE P-BLOCK ELEMENTS

316693 The species that is not hydrolysed in water is

1 \(\mathrm{P}_{4} \mathrm{O}_{10}\)
2 \(\mathrm{BaO}_{2}\)
3 \({\rm{M}}{{\rm{g}}_{\rm{3}}}{{\rm{N}}_{\rm{2}}}\)
4 \(\mathrm{N}_{2} \mathrm{O}_{3}\)
KCET - 2014
CHXI11:THE P-BLOCK ELEMENTS

316694 Which of the following statements is wrong?

1 Nitrogen cannot form \({\rm{d\pi - p\pi }}\) bond
2 Single \(\mathrm{N}-\mathrm{N}\) bond is weaker than the single \(\mathrm{P}\) - \(\mathrm{P}\) bond
3 \(\mathrm{N}_{2} \mathrm{O}_{4}\) has two resonance structure
4 The stability of hydrides increase from \({\rm{N}}{{\rm{H}}_{\rm{3}}}\,\,{\rm{to}}\,\,{\rm{Bi}}{{\rm{H}}_{\rm{3}}}\) in group 15 of the periodic table
CHXI11:THE P-BLOCK ELEMENTS

316695 Assertion :
\(\mathrm{Sb}\) (III) is not precipitated as sulphide when in its alkaline solution \(\mathrm{H}_{2} \mathrm{~S}\) is passed.
Reason :
The concentration of \(\mathrm{S}^{2-}\) ion in alkaline medium is inadequate for precipitation.

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

316696 Read Assertion and Reason carefully to mark the correct option given below.
Assertion :
Although, \(\mathrm{PF}_{5}, \mathrm{PCl}_{5}\) and \(\mathrm{PBr}_{5}\) are known, the pentahalides of nitrogen have not been observed.
Reason :
Phosphorus has lower electronegativity than nitrogen.

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

316697 White \({{\rm{P}}_{\rm{4}}}\) is more reactive than \(\mathrm{N}_{2}\) because

1 Ionisation energy of \(\mathrm{P}\) is low
2 \(\mathrm{P}-\mathrm{P}\) bond is weaker than \(\mathrm{N} \equiv \mathrm{N}\)
3 Electronegativity of \({{\rm{P}}_{\rm{4}}}\) is low
4 All of the above
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CHXI11:THE P-BLOCK ELEMENTS

316693 The species that is not hydrolysed in water is

1 \(\mathrm{P}_{4} \mathrm{O}_{10}\)
2 \(\mathrm{BaO}_{2}\)
3 \({\rm{M}}{{\rm{g}}_{\rm{3}}}{{\rm{N}}_{\rm{2}}}\)
4 \(\mathrm{N}_{2} \mathrm{O}_{3}\)
KCET - 2014
CHXI11:THE P-BLOCK ELEMENTS

316694 Which of the following statements is wrong?

1 Nitrogen cannot form \({\rm{d\pi - p\pi }}\) bond
2 Single \(\mathrm{N}-\mathrm{N}\) bond is weaker than the single \(\mathrm{P}\) - \(\mathrm{P}\) bond
3 \(\mathrm{N}_{2} \mathrm{O}_{4}\) has two resonance structure
4 The stability of hydrides increase from \({\rm{N}}{{\rm{H}}_{\rm{3}}}\,\,{\rm{to}}\,\,{\rm{Bi}}{{\rm{H}}_{\rm{3}}}\) in group 15 of the periodic table
CHXI11:THE P-BLOCK ELEMENTS

316695 Assertion :
\(\mathrm{Sb}\) (III) is not precipitated as sulphide when in its alkaline solution \(\mathrm{H}_{2} \mathrm{~S}\) is passed.
Reason :
The concentration of \(\mathrm{S}^{2-}\) ion in alkaline medium is inadequate for precipitation.

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

316696 Read Assertion and Reason carefully to mark the correct option given below.
Assertion :
Although, \(\mathrm{PF}_{5}, \mathrm{PCl}_{5}\) and \(\mathrm{PBr}_{5}\) are known, the pentahalides of nitrogen have not been observed.
Reason :
Phosphorus has lower electronegativity than nitrogen.

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

316697 White \({{\rm{P}}_{\rm{4}}}\) is more reactive than \(\mathrm{N}_{2}\) because

1 Ionisation energy of \(\mathrm{P}\) is low
2 \(\mathrm{P}-\mathrm{P}\) bond is weaker than \(\mathrm{N} \equiv \mathrm{N}\)
3 Electronegativity of \({{\rm{P}}_{\rm{4}}}\) is low
4 All of the above
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CHXI11:THE P-BLOCK ELEMENTS

316693 The species that is not hydrolysed in water is

1 \(\mathrm{P}_{4} \mathrm{O}_{10}\)
2 \(\mathrm{BaO}_{2}\)
3 \({\rm{M}}{{\rm{g}}_{\rm{3}}}{{\rm{N}}_{\rm{2}}}\)
4 \(\mathrm{N}_{2} \mathrm{O}_{3}\)
KCET - 2014
CHXI11:THE P-BLOCK ELEMENTS

316694 Which of the following statements is wrong?

1 Nitrogen cannot form \({\rm{d\pi - p\pi }}\) bond
2 Single \(\mathrm{N}-\mathrm{N}\) bond is weaker than the single \(\mathrm{P}\) - \(\mathrm{P}\) bond
3 \(\mathrm{N}_{2} \mathrm{O}_{4}\) has two resonance structure
4 The stability of hydrides increase from \({\rm{N}}{{\rm{H}}_{\rm{3}}}\,\,{\rm{to}}\,\,{\rm{Bi}}{{\rm{H}}_{\rm{3}}}\) in group 15 of the periodic table
CHXI11:THE P-BLOCK ELEMENTS

316695 Assertion :
\(\mathrm{Sb}\) (III) is not precipitated as sulphide when in its alkaline solution \(\mathrm{H}_{2} \mathrm{~S}\) is passed.
Reason :
The concentration of \(\mathrm{S}^{2-}\) ion in alkaline medium is inadequate for precipitation.

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

316696 Read Assertion and Reason carefully to mark the correct option given below.
Assertion :
Although, \(\mathrm{PF}_{5}, \mathrm{PCl}_{5}\) and \(\mathrm{PBr}_{5}\) are known, the pentahalides of nitrogen have not been observed.
Reason :
Phosphorus has lower electronegativity than nitrogen.

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

316697 White \({{\rm{P}}_{\rm{4}}}\) is more reactive than \(\mathrm{N}_{2}\) because

1 Ionisation energy of \(\mathrm{P}\) is low
2 \(\mathrm{P}-\mathrm{P}\) bond is weaker than \(\mathrm{N} \equiv \mathrm{N}\)
3 Electronegativity of \({{\rm{P}}_{\rm{4}}}\) is low
4 All of the above
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CHXI11:THE P-BLOCK ELEMENTS

316693 The species that is not hydrolysed in water is

1 \(\mathrm{P}_{4} \mathrm{O}_{10}\)
2 \(\mathrm{BaO}_{2}\)
3 \({\rm{M}}{{\rm{g}}_{\rm{3}}}{{\rm{N}}_{\rm{2}}}\)
4 \(\mathrm{N}_{2} \mathrm{O}_{3}\)
KCET - 2014
CHXI11:THE P-BLOCK ELEMENTS

316694 Which of the following statements is wrong?

1 Nitrogen cannot form \({\rm{d\pi - p\pi }}\) bond
2 Single \(\mathrm{N}-\mathrm{N}\) bond is weaker than the single \(\mathrm{P}\) - \(\mathrm{P}\) bond
3 \(\mathrm{N}_{2} \mathrm{O}_{4}\) has two resonance structure
4 The stability of hydrides increase from \({\rm{N}}{{\rm{H}}_{\rm{3}}}\,\,{\rm{to}}\,\,{\rm{Bi}}{{\rm{H}}_{\rm{3}}}\) in group 15 of the periodic table
CHXI11:THE P-BLOCK ELEMENTS

316695 Assertion :
\(\mathrm{Sb}\) (III) is not precipitated as sulphide when in its alkaline solution \(\mathrm{H}_{2} \mathrm{~S}\) is passed.
Reason :
The concentration of \(\mathrm{S}^{2-}\) ion in alkaline medium is inadequate for precipitation.

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

316696 Read Assertion and Reason carefully to mark the correct option given below.
Assertion :
Although, \(\mathrm{PF}_{5}, \mathrm{PCl}_{5}\) and \(\mathrm{PBr}_{5}\) are known, the pentahalides of nitrogen have not been observed.
Reason :
Phosphorus has lower electronegativity than nitrogen.

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

316697 White \({{\rm{P}}_{\rm{4}}}\) is more reactive than \(\mathrm{N}_{2}\) because

1 Ionisation energy of \(\mathrm{P}\) is low
2 \(\mathrm{P}-\mathrm{P}\) bond is weaker than \(\mathrm{N} \equiv \mathrm{N}\)
3 Electronegativity of \({{\rm{P}}_{\rm{4}}}\) is low
4 All of the above
NEET DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

316693 The species that is not hydrolysed in water is

1 \(\mathrm{P}_{4} \mathrm{O}_{10}\)
2 \(\mathrm{BaO}_{2}\)
3 \({\rm{M}}{{\rm{g}}_{\rm{3}}}{{\rm{N}}_{\rm{2}}}\)
4 \(\mathrm{N}_{2} \mathrm{O}_{3}\)
KCET - 2014
CHXI11:THE P-BLOCK ELEMENTS

316694 Which of the following statements is wrong?

1 Nitrogen cannot form \({\rm{d\pi - p\pi }}\) bond
2 Single \(\mathrm{N}-\mathrm{N}\) bond is weaker than the single \(\mathrm{P}\) - \(\mathrm{P}\) bond
3 \(\mathrm{N}_{2} \mathrm{O}_{4}\) has two resonance structure
4 The stability of hydrides increase from \({\rm{N}}{{\rm{H}}_{\rm{3}}}\,\,{\rm{to}}\,\,{\rm{Bi}}{{\rm{H}}_{\rm{3}}}\) in group 15 of the periodic table
CHXI11:THE P-BLOCK ELEMENTS

316695 Assertion :
\(\mathrm{Sb}\) (III) is not precipitated as sulphide when in its alkaline solution \(\mathrm{H}_{2} \mathrm{~S}\) is passed.
Reason :
The concentration of \(\mathrm{S}^{2-}\) ion in alkaline medium is inadequate for precipitation.

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

316696 Read Assertion and Reason carefully to mark the correct option given below.
Assertion :
Although, \(\mathrm{PF}_{5}, \mathrm{PCl}_{5}\) and \(\mathrm{PBr}_{5}\) are known, the pentahalides of nitrogen have not been observed.
Reason :
Phosphorus has lower electronegativity than nitrogen.

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

316697 White \({{\rm{P}}_{\rm{4}}}\) is more reactive than \(\mathrm{N}_{2}\) because

1 Ionisation energy of \(\mathrm{P}\) is low
2 \(\mathrm{P}-\mathrm{P}\) bond is weaker than \(\mathrm{N} \equiv \mathrm{N}\)
3 Electronegativity of \({{\rm{P}}_{\rm{4}}}\) is low
4 All of the above