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MODERN PUBLICATION-GROUP 18 ELEMENTS-EXERCISE
- Which of the following is a life saving mixture for asthma patients ?
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- Which of the following statement is not correct ?
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- Which noble gas is most soluble in water ?
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- Total number of lone pair of electrons in XeOF4 IS:
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- Which one of the following does not exist ? Why ? XeOF(4),NeF(2),XeF...
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- Give the structure of XeF(6) .
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- Hybridisation of Xe in XeF4, is
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- Which pentafluorides cannot be formed ?
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- Which is the strongest base among the following
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- XeOF(4)
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- In XeF(2) , xeF(4) and XeF(6) the number of lone pairs and Xe is respe...
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- Argon was discovered by:
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- Which of the following noble gases is the least polarisable ?
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- Which of the following noble gases is abundant in air ?
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- Which of the following noble gases is abundant in air ?
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- Noble gases are:
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- Give the structure of XeF(6) .
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- Which one of the following is not present in RNA ?
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- Helium is used in gas ballons instead of hydrogen because :
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- The first viral disease detected in human being was :
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