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- The noble gases are unreactive because they:
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- The gas used for inflating the tyres of aeroplanes is:
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- Major credit for the discovery of noble gases is given to:
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- Hellium was discovered by:
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- Argon was discovered by:
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- The most abundant inert gas in air is:
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- The principal source of helium is:
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- A radioactive element X decays to give two inert gases in air is:
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- The lightest, non-inflammable gas is:
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- The gaseous mixture used by divers for respiration is:
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- Xenon tetrafluoride is:
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- Xenon difluoride is
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- The rare gases are
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- The gas having lowest boiling point is:
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- The element having highest ionisation potential is:
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- Noble gases can be separated by :
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- Coconut charcoal at-100^0C absorbs in a mixture of:
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- Coconut charcoal at-180^0C is used to separate a mixture of:
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- Which of the following noble gases is the least polarisable ?
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- Which is monoatomic:
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