Which of the following ions is paramagnetic? from Chemistry Chem

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

481.

Which of the following is paramagnetic?

  • CO

  • N2

  • O2

  • H2O2


482.

Which of the following has sp3 -hybridisation?

  • BCl3

  • PCl3

  • BeCl3

  • None of these


483.

Among the following compounds which is planar in shape is

  • acetylene

  • benzene

  • isobutene

  • methane


484.

The number of σ bonds in P4O10 is:

  • 6

  • 16

  • 7

  • 17


Advertisement
Advertisement

485.

Which of the following ions is paramagnetic?

  • Cu++

  • Zn++

  • Ni++

  • Both 'a' and 'c'


D.

Both 'a' and 'c'

Paramagnetic compounds have unpaired electrons. These are attracted to magnetic fields. 

Among all the given options, Cu++ and Ni++ are paramagnetic.


Advertisement
486.

The molecule having largest dipole moment among the following is

  • CHI3

  • CH4

  • CHCl3

  • CCl4


487.

Pick out the incorrect statement from the following :

  • sp hybrid orbitals are equivalent and are at an angle of 180° with each other

  • sp2 hybrid orbitals are equivalent and bond angle between any two of them is 120°

  • sp3dhybrid orbitals are equivalent and are oriented towards corners of a regular octahedron

  • dsp2 hybrid orbitals are equivalent with a bond angle of 90° between the two atoms


488.

Which of the following electronic configurations has maximum energy?


Advertisement
489.

The hybridisation of the central atom in BrF5 molecule is :

  • sp3

  • dsp2

  • sp3d2

  • d3sp3


490.

A covalent molecule AB3 has pyramidal structure. The number of lone pair and bond pair of electrons in the molecule a respectively :

  • 2 and 2

  • 0 and 2

  • 3 and 1

  • 1 and 3


Advertisement