Oxygen and Its Compounds
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CHXI11:THE P-BLOCK ELEMENTS

316806 Which of the following metal loses its meniscus after reaction with ozone?

1 Mercury
2 Copper
3 Silver
4 Lead
CHXI11:THE P-BLOCK ELEMENTS

316807 Which of the following does not give oxygen on heating?

1 \(\mathrm{Zn}\left(\mathrm{ClO}_{3}\right)_{2}\)
2 \(\mathrm{KClO}_{3}\)
3 \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
CHXI11:THE P-BLOCK ELEMENTS

316808 The maximum number of unpaired electrons exists in :

1 \({{\rm{O}}_2}\)
2 \({\rm{O}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{O}}_{\rm{2}}^{{\rm{ - 2}}}\)
4 \({\rm{O}}_{\rm{2}}^{{\rm{ + 2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316809 Which compound on heating alone does not form \(\mathrm{O}_{2}\) ?

1 \(\mathrm{KClO}_{4}\)
2 \(\mathrm{KMnO}_{4}\)
3 \(\mathrm{KNO}_{3}\)
4 \(\mathrm{NH}_{4} \mathrm{NO}_{2}\)
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CHXI11:THE P-BLOCK ELEMENTS

316806 Which of the following metal loses its meniscus after reaction with ozone?

1 Mercury
2 Copper
3 Silver
4 Lead
CHXI11:THE P-BLOCK ELEMENTS

316807 Which of the following does not give oxygen on heating?

1 \(\mathrm{Zn}\left(\mathrm{ClO}_{3}\right)_{2}\)
2 \(\mathrm{KClO}_{3}\)
3 \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
CHXI11:THE P-BLOCK ELEMENTS

316808 The maximum number of unpaired electrons exists in :

1 \({{\rm{O}}_2}\)
2 \({\rm{O}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{O}}_{\rm{2}}^{{\rm{ - 2}}}\)
4 \({\rm{O}}_{\rm{2}}^{{\rm{ + 2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316809 Which compound on heating alone does not form \(\mathrm{O}_{2}\) ?

1 \(\mathrm{KClO}_{4}\)
2 \(\mathrm{KMnO}_{4}\)
3 \(\mathrm{KNO}_{3}\)
4 \(\mathrm{NH}_{4} \mathrm{NO}_{2}\)
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CHXI11:THE P-BLOCK ELEMENTS

316806 Which of the following metal loses its meniscus after reaction with ozone?

1 Mercury
2 Copper
3 Silver
4 Lead
CHXI11:THE P-BLOCK ELEMENTS

316807 Which of the following does not give oxygen on heating?

1 \(\mathrm{Zn}\left(\mathrm{ClO}_{3}\right)_{2}\)
2 \(\mathrm{KClO}_{3}\)
3 \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
CHXI11:THE P-BLOCK ELEMENTS

316808 The maximum number of unpaired electrons exists in :

1 \({{\rm{O}}_2}\)
2 \({\rm{O}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{O}}_{\rm{2}}^{{\rm{ - 2}}}\)
4 \({\rm{O}}_{\rm{2}}^{{\rm{ + 2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316809 Which compound on heating alone does not form \(\mathrm{O}_{2}\) ?

1 \(\mathrm{KClO}_{4}\)
2 \(\mathrm{KMnO}_{4}\)
3 \(\mathrm{KNO}_{3}\)
4 \(\mathrm{NH}_{4} \mathrm{NO}_{2}\)
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CHXI11:THE P-BLOCK ELEMENTS

316806 Which of the following metal loses its meniscus after reaction with ozone?

1 Mercury
2 Copper
3 Silver
4 Lead
CHXI11:THE P-BLOCK ELEMENTS

316807 Which of the following does not give oxygen on heating?

1 \(\mathrm{Zn}\left(\mathrm{ClO}_{3}\right)_{2}\)
2 \(\mathrm{KClO}_{3}\)
3 \(\left(\mathrm{NH}_{4}\right)_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
4 \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\)
CHXI11:THE P-BLOCK ELEMENTS

316808 The maximum number of unpaired electrons exists in :

1 \({{\rm{O}}_2}\)
2 \({\rm{O}}_{\rm{2}}^{\rm{ - }}\)
3 \({\rm{O}}_{\rm{2}}^{{\rm{ - 2}}}\)
4 \({\rm{O}}_{\rm{2}}^{{\rm{ + 2}}}\)
CHXI11:THE P-BLOCK ELEMENTS

316809 Which compound on heating alone does not form \(\mathrm{O}_{2}\) ?

1 \(\mathrm{KClO}_{4}\)
2 \(\mathrm{KMnO}_{4}\)
3 \(\mathrm{KNO}_{3}\)
4 \(\mathrm{NH}_{4} \mathrm{NO}_{2}\)
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