Miscellaneous Question based on Group – 15, 16, 17, and 18 Elements
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CHXI11:THE P-BLOCK ELEMENTS

316633 Which of the following is not a peroxyl acid?

1 Perphosphoric acid
2 Pernitric acid
3 Perdisulphuric acid
4 Perchloric acid
CHXI11:THE P-BLOCK ELEMENTS

316634 A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with \(\mathrm{NH}_{3}\) an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

1 -3 to +3
2 -3 to 0
3 -3 to +5
4 0 to -3
CHXI11:THE P-BLOCK ELEMENTS

316635 Which of the following statements is wrong?

1 Single \(\mathrm{N}-\mathrm{N}\) bond is stronger than the single \(\mathrm{P}-\mathrm{P}\) bond.
2 \(\mathrm{PH}_{3}\) can act as a ligand in the formation of coordination compound with transition elements.
3 \(\mathrm{NO}_{2}\) is paramagnetic in nature.
4 Halogens usually forms ionic compounds with alkali metals.
CHXI11:THE P-BLOCK ELEMENTS

316636 The element that does not form acidic oxide is

1 carbon
2 phosphorus
3 chlorine
4 barium
KCET - 2018
CHXI11:THE P-BLOCK ELEMENTS

316637 Which of the following two are isostructural ?

1 \({\rm{Xe}}{{\rm{F}}_{\rm{2}}}{\rm{,}}\,\,{\rm{IF}}_{\rm{2}}^{\rm{ - }}\)
2 \(\mathrm{NH}_{3}, \mathrm{BF}_{3}\)
3 \(\mathrm{CO}_{3}^{2-}, \mathrm{SO}_{3}^{2-}\)
4 \(\mathrm{PCI}_{5}, \mathrm{ICI}_{5}\)
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CHXI11:THE P-BLOCK ELEMENTS

316633 Which of the following is not a peroxyl acid?

1 Perphosphoric acid
2 Pernitric acid
3 Perdisulphuric acid
4 Perchloric acid
CHXI11:THE P-BLOCK ELEMENTS

316634 A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with \(\mathrm{NH}_{3}\) an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

1 -3 to +3
2 -3 to 0
3 -3 to +5
4 0 to -3
CHXI11:THE P-BLOCK ELEMENTS

316635 Which of the following statements is wrong?

1 Single \(\mathrm{N}-\mathrm{N}\) bond is stronger than the single \(\mathrm{P}-\mathrm{P}\) bond.
2 \(\mathrm{PH}_{3}\) can act as a ligand in the formation of coordination compound with transition elements.
3 \(\mathrm{NO}_{2}\) is paramagnetic in nature.
4 Halogens usually forms ionic compounds with alkali metals.
CHXI11:THE P-BLOCK ELEMENTS

316636 The element that does not form acidic oxide is

1 carbon
2 phosphorus
3 chlorine
4 barium
KCET - 2018
CHXI11:THE P-BLOCK ELEMENTS

316637 Which of the following two are isostructural ?

1 \({\rm{Xe}}{{\rm{F}}_{\rm{2}}}{\rm{,}}\,\,{\rm{IF}}_{\rm{2}}^{\rm{ - }}\)
2 \(\mathrm{NH}_{3}, \mathrm{BF}_{3}\)
3 \(\mathrm{CO}_{3}^{2-}, \mathrm{SO}_{3}^{2-}\)
4 \(\mathrm{PCI}_{5}, \mathrm{ICI}_{5}\)
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CHXI11:THE P-BLOCK ELEMENTS

316633 Which of the following is not a peroxyl acid?

1 Perphosphoric acid
2 Pernitric acid
3 Perdisulphuric acid
4 Perchloric acid
CHXI11:THE P-BLOCK ELEMENTS

316634 A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with \(\mathrm{NH}_{3}\) an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

1 -3 to +3
2 -3 to 0
3 -3 to +5
4 0 to -3
CHXI11:THE P-BLOCK ELEMENTS

316635 Which of the following statements is wrong?

1 Single \(\mathrm{N}-\mathrm{N}\) bond is stronger than the single \(\mathrm{P}-\mathrm{P}\) bond.
2 \(\mathrm{PH}_{3}\) can act as a ligand in the formation of coordination compound with transition elements.
3 \(\mathrm{NO}_{2}\) is paramagnetic in nature.
4 Halogens usually forms ionic compounds with alkali metals.
CHXI11:THE P-BLOCK ELEMENTS

316636 The element that does not form acidic oxide is

1 carbon
2 phosphorus
3 chlorine
4 barium
KCET - 2018
CHXI11:THE P-BLOCK ELEMENTS

316637 Which of the following two are isostructural ?

1 \({\rm{Xe}}{{\rm{F}}_{\rm{2}}}{\rm{,}}\,\,{\rm{IF}}_{\rm{2}}^{\rm{ - }}\)
2 \(\mathrm{NH}_{3}, \mathrm{BF}_{3}\)
3 \(\mathrm{CO}_{3}^{2-}, \mathrm{SO}_{3}^{2-}\)
4 \(\mathrm{PCI}_{5}, \mathrm{ICI}_{5}\)
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CHXI11:THE P-BLOCK ELEMENTS

316633 Which of the following is not a peroxyl acid?

1 Perphosphoric acid
2 Pernitric acid
3 Perdisulphuric acid
4 Perchloric acid
CHXI11:THE P-BLOCK ELEMENTS

316634 A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with \(\mathrm{NH}_{3}\) an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

1 -3 to +3
2 -3 to 0
3 -3 to +5
4 0 to -3
CHXI11:THE P-BLOCK ELEMENTS

316635 Which of the following statements is wrong?

1 Single \(\mathrm{N}-\mathrm{N}\) bond is stronger than the single \(\mathrm{P}-\mathrm{P}\) bond.
2 \(\mathrm{PH}_{3}\) can act as a ligand in the formation of coordination compound with transition elements.
3 \(\mathrm{NO}_{2}\) is paramagnetic in nature.
4 Halogens usually forms ionic compounds with alkali metals.
CHXI11:THE P-BLOCK ELEMENTS

316636 The element that does not form acidic oxide is

1 carbon
2 phosphorus
3 chlorine
4 barium
KCET - 2018
CHXI11:THE P-BLOCK ELEMENTS

316637 Which of the following two are isostructural ?

1 \({\rm{Xe}}{{\rm{F}}_{\rm{2}}}{\rm{,}}\,\,{\rm{IF}}_{\rm{2}}^{\rm{ - }}\)
2 \(\mathrm{NH}_{3}, \mathrm{BF}_{3}\)
3 \(\mathrm{CO}_{3}^{2-}, \mathrm{SO}_{3}^{2-}\)
4 \(\mathrm{PCI}_{5}, \mathrm{ICI}_{5}\)
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CHXI11:THE P-BLOCK ELEMENTS

316633 Which of the following is not a peroxyl acid?

1 Perphosphoric acid
2 Pernitric acid
3 Perdisulphuric acid
4 Perchloric acid
CHXI11:THE P-BLOCK ELEMENTS

316634 A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with \(\mathrm{NH}_{3}\) an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

1 -3 to +3
2 -3 to 0
3 -3 to +5
4 0 to -3
CHXI11:THE P-BLOCK ELEMENTS

316635 Which of the following statements is wrong?

1 Single \(\mathrm{N}-\mathrm{N}\) bond is stronger than the single \(\mathrm{P}-\mathrm{P}\) bond.
2 \(\mathrm{PH}_{3}\) can act as a ligand in the formation of coordination compound with transition elements.
3 \(\mathrm{NO}_{2}\) is paramagnetic in nature.
4 Halogens usually forms ionic compounds with alkali metals.
CHXI11:THE P-BLOCK ELEMENTS

316636 The element that does not form acidic oxide is

1 carbon
2 phosphorus
3 chlorine
4 barium
KCET - 2018
CHXI11:THE P-BLOCK ELEMENTS

316637 Which of the following two are isostructural ?

1 \({\rm{Xe}}{{\rm{F}}_{\rm{2}}}{\rm{,}}\,\,{\rm{IF}}_{\rm{2}}^{\rm{ - }}\)
2 \(\mathrm{NH}_{3}, \mathrm{BF}_{3}\)
3 \(\mathrm{CO}_{3}^{2-}, \mathrm{SO}_{3}^{2-}\)
4 \(\mathrm{PCI}_{5}, \mathrm{ICI}_{5}\)