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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
- OF2 is called as oxygen difluoride and not fluorine oxide. Why?
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- Which noble gas has less than 8 electrons in its valency shell?
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- The inert gas used in beacon lights is
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- Randon was discovered by
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- Which noble gas compound is highly explosive?
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- Arrange as indicated - H2O , H2S , H2Se , H2Te ( increasing bond ang...
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- In SO2 an oxidizing agent or reducing agent or both?
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- Which oxide of oxygen family is amphoteric in nature?
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- What is the highest oxidation state of oxygen family ?
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- What is oil of vitriol ?
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- Write two oxoacid of sulphur.
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- The first noble gas compound was prepared by
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- noble gas can't be absorbed by coconut charcoal .
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- Radon is formed by disintegration of .
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- Which of the halogens forms hydrogen bond ?
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- Which halogen is solid at the room temperature ?
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- Write two uses of Ozone.
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- Which of the following is used in cryogenics.
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- Draw the resonating structure of O3 molecule.
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- For dilution of H2SO4,H2O should not be added to conc. H2SO4. Give the...
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