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Which one of the following statements re...

Which one of the following statements regarding helium is incorrect?

A

It is used to fill gas balloons instead of hydrogen because it is lighter and non-inflammable

B

It is used in gas-cooled nuclear reactors

C

It is used to produce and sustain powerful surperconducting magnets

D

It is used as a cryogenic agent for carrying out experiments at low temperatures.

Text Solution

Verified by Experts

The correct Answer is:
A
Helium is not lighter than hydrogen.
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DINESH PUBLICATION-THE NOBLE GASES-RQ
  1. Argon was discovered by

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  2. The gaseous mixture used by deep sea divers for respiration is

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  3. Which one of the following statements regarding helium is incorrect?

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  4. Which of the following is an inert gas?

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  5. Which of the following is not correct ?

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  6. The molecular shapes of SF(4),CF(4) " and " XeF(4) are :

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  7. Among the following molecules, (i)XeO(3)(ii)XeOF(4)(iii)XeF(6) those h...

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  8. Which inert gas has abnormal behaviour in liquefaction

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  9. The formation of O(2)^(+)[PtF(6)]^(-) is the basis for the formation o...

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  10. Hydrolysis of XeF(4) and CaNCN gives respectively :

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  11. Among the following , the pair in which the two species are not isostr...

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  12. Which is the most easily liquifiable rare gas

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  13. Which one of the following reaction of xenon compounds is not Feasible...

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  14. Perxenate ion is

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  15. Which of the following fluorides of Xe has zero dipole moment ?

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  16. Which of the following contains maximum number of pairs around Xe atom...

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  17. Which of the following noble gases is used in miner's cap lamp ?

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  18. The structure of XeO(2)F(2) is

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  19. Which of the following is used in flash tubes in photography ?

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  20. Which of the followng noble gases has the highest positive electron ga...

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