NEET Chemistry - New - p-Block Elements

Buy NEET English 2022 (Express) Practice test pack

Question - 1

The correct order of N-compounds in its decreasing order of oxidation states is :

  • A HNO3, NH4Cl, NO, N2
  • B HNO3, NO, NH4Cl, N2
  • C HNO3, NO, N2, NH4Cl
  • D NH4Cl, N2, NO, HNO3

Question - 2

When copper is heated with cone. HNO3 it produces:

  • A Cu(NO3)2, NO and NO2
  • B Cu(NO3)2 and N2O
  • C Cu(NO3)2 and NO2
  • D Cu(NO3)2 and NO

Question - 3

Which of the following statements is not valid for oxoacids of phosphorus?

  • A Orthophosphoric acid is used in the manufacture of triple superphosphate.
  • B Hypophosphorous acid is a diprotic acid.
  • C Alloxoacids contain tetrahedral four coordinated phosphorus
  • D All oxoacids contain at least one P=O unit and one P-OH group.

Question - 4

Oxidation states of P in H4P2O5, H4P2O6, H4P2O7 are respectively.

  • A +3, +5, +4
  • B +5, +3, +4
  • C +5, +4, +3
  • D +3, +4, +5

Question - 5

How many bridging oxygen atoms are present in P4O10?

  • A 6
  • B 4
  • C 2
  • D 5

Question - 6

The electronegativity difference between N and F is greater than that between Nand H yet the dipole moment of NH3(1.5 D) is larger than that of NF3  (0.2 D). This is because:

  • A in NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3 these are in the same direction.
  • B in NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction.
  • C in NH3 the atomic dipole and bond dipole are in the same direction where as in NF3 these are in opposite directions.
  • D in NH3 as well as in NF3 the atomic dipole and bond dipole are in opposite directions.

Question - 7

Which of the following oxides is most acidic?

  • A As2O5
  • B P2O5
  • C N2O5
  • D Sb2O5

Question - 8

Which of the following phosphorus is the most reactive?

  • A Scarlet phosphorus
  • B White phosphorus
  • C Red phosphorus
  • D Violet phosphorus

Question - 9

Repeated use of which one of the following fertilizers would increase the acidity of the soil?

  • A Ammonium sulphate
  • B Superphosphate of lime
  • C Urea
  • D Potassium nitrate

Question - 10

Which of the following has the highest dipole moment?

  • A SbH3
  • B AsH3
  • C NH3
  • D PH3
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next