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(A): Among noble gases Xe can readily fo...

(A): Among noble gases Xe can readily form compounds with fluorine
(R): Among noble gases, Xe has lesser ionisation potential

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-NOBLE GASES-OBJECTIVE EXERCISE - 4 (ASSERTION (A) AND REASON (R ) TYPE QUESTIONS)
  1. (A): Noble gases are springly soluble in water (R): Neon has high p...

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  2. (A): Noble gases are lower melting points and boiling points (R): N...

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  3. (A): Among noble gases Xe can readily form compounds with fluorine ...

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  4. (A): The name helium is made after sun (R): Helium is abundant gas ...

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  5. (A): Helium is found in radioactive minerals (R): During alpha-day,...

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  6. (A): All noble gases are monoatomic (R): Noble gas atom is stable a...

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  7. (A): Neon is used to fill advertisement glass bulbs (R): Neon gives...

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  8. (A): The mole fraction of argon in air is 0.95 (R): The volume perc...

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  9. (A): Radium is a natural source of two noble gases (R): Radium unde...

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  10. (A) Below 2.2 Kelvin, helium is called super fluid (R) Helium has...

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  11. (A) Xenon fluorides are well known and stable but the corresponding ch...

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  12. (A): Electron gain enthalpy of noble gases is very less (R): Atoms of ...

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  13. (A) Atomicity of argon is unity (R) Ratio of molar heat capacities...

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  14. (A) Density of nitrogen obtained in chemical methods is more than that...

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  15. (A) Xenon tetrafluoride molecule is denoted as AB4E4, where E is a lo...

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  16. (A) First ionisation potential of helium is highest (R) The electro...

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  17. (A) Valency of xenon in second excited state is two (R) Xenon forms ...

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  18. (A) Boiling point of helium is least (R) Intermolecular forces of ...

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  19. (A) All the noble gases have ns^2 np^6 electronic configuration in the...

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  20. (A) Helium is regarded as the least volatile of all liquids. (R) ...

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