Quiz  /  P Block Elements Class 12 MCQ Questions With Answers

  • 1. 
    In group 15 elements as we move down the road atomic radii

  • Increases
  • Decreases
  • Remain same
  • None of the above

  • 2. 
    5.The shape of I F 7

  • T shape
  • trigonal bipyramidal
  • linear
  • pentagonal bipyramidal

  • 3. 
    SF6 is known but SCl6 is not________

  • Due to small size of fluorine six F – ion can be accomodated around sulphur whereas chloride ion is comparatively larger in size, therefore, there will be interionic repulsion
  • Due to absence of vacant d orbital
  • Chlorine have more electron gain enthalpy than
  • none of these

  • 4. 
    Which one of the following is an antichlor agent?

  • SO2
  • SO3
  • NH3
  • PH3

  • 5. 
    Among the hydrides of 15th group , which is strong reducing agent?

  • Ammonia
  • Phosphine
  • Arsine
  • Bismuthine

  • 6. 
    Assertion : N2 is less reactive than P4.Reason : Nitrogen has more electron gain enthalpy than phosphorus

  • Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
  • Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.
  • Assertion is correct, but reason is wrong statement.
  • Assertion is wrong but reason is correct statement.
  • Both assertion and reason are wrong statement

  • 7. 
    Chlorous acid

  • HClO3
  • HClO2
  • HClO
  • HCl

  • 8. 
    Lack of Iodine can lead to persons experiencing dry eyes and dry mouth.

  • TRUE
  • FALSE

  • 9. 
    SO2 can be dried by

  • H2SO4
  • CaO
  • H3PO4
  • NONE OF THESE

  • 10. 
    Bismuth is a

  • Metalloids
  • Non metal
  • Metal
  • None of the above

  • 11. 
    Nitrogen cannot exhibit co valancy more than four due to

  • Presence of vacant d orbitals
  • Due to large size
  • Due to absence of vacant d orbitals
  • Due to inert nature

  • 12. 
    Sulphur in the vapour state is diamagnetic.

  • True
  • False

  • 13. 
    Which compound was the first compound of noble gas?

  • XePtF6
  • ArPtF6
  • NePtF6
  • none

  • 14. 
    The only one oxoacid of fluorine is

  • HOF2
  • HOFO
  • HOF
  • HOF3

  • 15. 
    Balance the ionic equation:Cl2 + KBr → Br2 + KCl

  • Cl2 + 2KBr → Br2 + 2KCl
  • Cl2 + 2KBr → Br2 + KCl
  • Cl2 + KBr → Br2 + 2KCl

  • 16. 
    In the interhalogen compound XX', which among the following statement is correct

  • X is larger halogen, X' is smaller halogen
  • X is smaller halogen, X' is larger halogen
  • Both X and X' are of the same size
  • Size of X and X' doesn't matter

  • 17. 
    Ammonia is a Lewis base and act as complexing agent.

  • It accepts electron pair
  • It is neither electron pair donar or acceptor
  • It act as electron pair donar.
  • It exhibit covalency more than five

  • 18. 
    What did Haber synthesize for Nobel Peace Prize?

  • Chlorine gas
  • Mustard gas
  • Synthesizing Ammonia
  • Dynamite

  • 19. 
    4.Which of the following is strongest acid among all ?

  • HI
  • HF
  • HBr
  • HCl

  • 20. 
    XeF6 on complete hydrolysis produces

  • XeOF 4
  • XeO2F 2
  • Xe O 3
  • Xe O 2

  • 21. 
    P-block elements are those elements in which last electron enters in

  • P ortibal
  • S orbital
  • d orbital
  • None of the above

  • 22. 
    Maximum covalency of nitrogen is

  • 6
  • 8
  • 9
  • 4

  • 23. 
    All elements in the Halogen family react violently because

  • Halogens have 1 valence electron that they give away readily to other elements in reactions
  • Halogens have 7 valence electrons which gives up massive energy when they give all seven to other elements
  • Halogens need only 1 electron which they will violently take from other elements
  • Halogens only react violently with water

  • 24. 
    Which of the following options are not in accordance with the propertymentioned against them?

  • (i) F2 > Cl2 > Br2 > I2 Oxidising power.
  • (ii) MI < MBr < MCl < MF Ionic character of metal halide.
  • (iii) F2 > Cl2 > Br2 > I2 Bond dissociation enthalpy.
  • (iv) HI < HBr < HCl < HF Bond dissociation enthalpy.
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