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CBSE

Subject

Chemistry
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NEET Chemistry : Chemical Bonding and Molecular Structure

Multiple Choice Questions

11.

The pair of species with t he same bond order is 

  • O22-, B2

  • O2+, NO+

  • NO, CO

  • NO, CO



12.

Magnetic moment 2.83 BM is given by which of the following ions?

(At. no.: Ti =22; Cr=24; Mn=25; Ni=28)

  • Ti3+

  • Ni2+

  • Cr3+

  • Cr3+



13.

Which of the following species contains three bond pairs and one lone pair around the central atoms?

  • H2O

  • BF3

  • NH2-

  • NH2-



14.

Which of the two ions from the list given below have the geometry that is explained by the same hybridization of orbitals



15.

Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?

  • [BCl3 and BrCl3]

  • [NH3 and NO3-]

  • [NF3 and BF3]

  • [NF3 and BF3]



16.

The Correct order of increasing bond length of C - H, C-O, C - C and C = C is

  • C - C < C=C < C - O < C - H

  • C - O < C - H < C - C < C = C

  • C - H < C - O <  C - C < C= C

  • C - H  < C = C < C - O < C - C



17.

Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them.

  • NO< O2-<C22- < He2+

  •  O2- <NO< C22- < He2+

  • C22- < He2+ <O2- <NO

  • C22- < He2+ <O2- <NO



18.

Which of the following organic compounds has same hybridization as its combustion product -(CO)2?

  • Ethane

  • Ethyne

  • Ethene

  • Ethene



19.

Bond order of 1.5 is shown by

  • O2+

  • O2-

  • O22-

  • O22-



20.

During the change of O2 to O2- ion, the electron adds on which one of the following orbitals?

  • π* orbital

  • π orbital

  • σ* orbital

  • σ* orbital



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