Important Questions of Chemical Bonding and Molecular Structure Chemistry | Zigya

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

Advertisement
871.

The electronic configuration is 1s2 2s2 2p5 3s1  shows

  • ground state of fluorine atom

  • excited state of fluorine atom

  • excited state of neon atom

  • excited state of ion O2


872.

Assertion : B2H6, Si2H6, are said to have similar structure.

Reason : They have same number of σ and π bonds.

  • If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

  • If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

  • If Assertion is true but Reason is false.

  • If Assertion is false but Reason is true.


873.

Assertion: Sigma (σ) is a strong bond, while pi (π) is a weak bond.
Reason: Atoms rotate freely about the pi (π) bond.

  • If both assertion and reason are true and the reason is a correct explanation of the assertion.

  • If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

  • If the assertion is true but the reason is false.

  • If both the assertion and reason are false.


874.

The correct order of decreasing H-C-H angle in the following molecule is

  • I > II > III

  • II > I > III

  • III > II > I

  • I > III > II


Advertisement
875.

The state of hybridization of the central atom and the number of lone pairs over the central atom in POCl3
are:

  • sp , 0

  • sp2 , 0

  • sp3 , 0

  • dsp2 , 1


876.

The compound that will have a permanent dipole moment among the following is

  • I

  • II

  • III

  • IV


877.

The correct order of decreasing length of the bond as indicated by the arrow in the following structures is

  • I > II > III

  • II > I > III

  • III > II > I

  • I > III > II


878.

In case of heteronuclear diatomics of the type AB, where A is more electronegative than B, bonding molecular orbital resembles the character of A more than that of B. The statement 

  • is false

  • is true

  • cannot be evaluated since data is not sufficient

  • is true only for certain systems


Advertisement
879.

Dipole-induced dipole interactions are present in which of the following pairs?

  • H2O and alcohol

  • Cl2 and CCl4

  • HCl and He atoms

  • SiF4 and He atoms


880.

Which of  the following structure is similar to graphite?

  • CO

  • O2-

  • CN-

  • NO+


Advertisement