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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
- 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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- Oxygen was discovered by .
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- Arrange the halogen hydrides in increasing order of their thermal stab...
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- The hydride of which halogen exists in the dimeric form ?
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- Arrange the halogens in increasing oder of Vander Waal's force present...
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- The Cp/Cv value of the noble gases .
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- Which noble gas is used in radiotherapy ?
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- Among the halogens which has highest bond dissociation energy ?
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- Why is Helium monoatomic ?
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- Between HI and HCl which is stronger acid?
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- Why can't Cl2 bleach dry flowers ?
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- Which noble gas is most soluble in water ?
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- Which noble gas is called as stranger gas?
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- Iodine is more soluble in KI than in water,why?
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