NEET Chemistry - New - Chemical Bonding and Molecular Structure

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Question - 1

Be2+ is isoelectronic with which of the following ions?

  • A H+
  • B Li+
  • C Na+
  • D Mg2+

Question - 2

Which of the following molecules has the maximum dipole moment?

  • A CO2
  • B CH4
  • C NH3
  • D NF3

Question - 3

Identify the correct order of solubility in aqueous medium.

  • A CuS > ZnS > Na2S
  • B ZnS > Na2S > CuS
  • C Na2S > CuS > ZnS
  • D Na2S > ZnS > CuS

Question - 4

Which of the following is a polar molecule?

  • A BF3
  • B SF4
  • C SiF4
  • D XeF4

Question - 5

Which of the following is least likely to behave as Lewis base?

  • A NH3
  • B BF3
  • C OH-
  • D H2O

Question - 6

In the case of alkali metals, the covalent character decreases in the order :

  • A MCl > MI > MBr > MF
  • B MF > MCl > MBr > MI
  • C MF > MCl > MI > MBr
  • D MI > MBr > MCl > MF

Question - 7

The correct order of C―O bond length among CO, CO32-, CO2 is :

  • A CO2 < CO32- < CO
  • B CO < CO32- < CO2
  • C CO32- < CO2 < CO
  • D CO < CO2 < CO32-

Question - 8

The correct sequence of increasing covalent character is represented by :

  • A LiCl < NaCl < BeCl2
  • B BeCl2 < NaCl < LiCl
  • C NaCl < LiCl < BeCl2
  • D BeCl2 < LiCl < NaCl

Question - 9

Which of the following is isoelectronic?

  • A CO2, NO2
  • B NO2-, CO2
  • C CN-, CO
  • D SO2, CO2

Question - 10

In PO43- ion, the formal charge on each oxygen atom and P―O bond order respectively are:

  • A - 0.75, 0.6
  • B - 0.75, 1.0
  • C - 0.75, 1.25
  • D - 3, 1.25