Among the following, the molecule of highest dipole moment is fr

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

121.

The number of sigma (σ) and pi (π) bonds present in 1, 3, 5, 7-octatetraene respectively are

  • 14 and 3

  • 17 and 4

  • 16 and 5

  • 15 and 4


122.

The molecule that contains only sp2 hybrid carbon atoms is

  • isoprene

  • acrylonitrile

  • but-1-ene

  • 1,3-butadiene


Advertisement

123.

Among the following, the molecule of highest dipole moment is

  • CCl4

  • NH3

  • H2O

  • CHCl3


C.

H2O

Dipole moment of symmetrical molecules is zero. The structures of the given molecules are as-

Thus, dipole moment is higher for H2O.


Advertisement
124.

The incorrectly matched pair, among the following is-

  • BrF5 - Trigonal bipyramidal

  • SF4 - See-saw

  • ClF3 - T-shape

  • NH3 - Trigonal pyramidal


Advertisement
125.

Which one of the following has the shortest bond length?

  • C - H

  • C - N

  • C - F

  • C - C


126.

Pick out the wrong statement.

  • Nitrogen has the ability to form pπ-pπ bonds with itself

  • Bismuth forms metallic bonds in elemental state

  • Catenation tendency is higher in nitrogen when compared with other elements of the same group

  • Nitrogen has higher first ionization enthalpy when compared with other elements of the same group


127.

The wrong statement about the interstitial compounds is

  • their melting points are lower than those of pure metals

  • they retain metallic conductivity

  • they are chemically inert

  • their bonds are neither ionic non covalent


128.

Which of the following is not correct with respect to bond length of the species? 

  • C2C22-

  • B2+ > B2

  • Li2+ > Li2

  • O2 > O2-


Advertisement
129.

Substance which is weakly repelled by a magnetic field is

  • O2

  • H2O

  • CrO2

  • Fe3O4


130.

The bonds present in the structure of dichromate ion are

  • four equivalent Cr-O bonds only

  • six equivalent Cr-O bonds and one Cr - O - O bond

  • six equivalent Cr-O bonds and one O-O bond

  • eight equivalent Cr-O bonds


Advertisement