Magnetic Properties, Catalytic Properties

The substances which are attracted by magnetic field are called as...

• Dimagnetic Substances

• Paramagnetic Substances

• Ferromagnetic Substances

• None of these

The substances which are repelled by magnetic field are called as...

• Paramagnetic Substances

• Dimagnetic Substances

• Ferromagnetic Substances

• None of these

Paramagnetic character arises due to ………..

the presence of unpaired electrons in the atomic orbitals

the presence of paired electrons in the atomic orbitals

Empty atomic orbitals

None of these

• the presence of unpaired electrons in the atomic orbitals

• the presence of paired electrons in the atomic orbitals

• Empty atomic orbitals

• None of these

Diamagnetic character arises due to ….

• the presence of unpaired electrons in the atomic orbitals

• the presence of paired electrons in the atomic orbitals

• Empty atomic orbitals

• None of these

Magnetic moment is given by the expression

• $\mu=\sqrt{2\left(n+2\right)}$

• $\mu=\sqrt{n\left(n+3\right)}$

• $\mu=\sqrt{n\left(n+2\right)}$

• $\mu=\sqrt{n\left(n\times2\right)}$

Transition elements are not used as catalyst

• True

• False

Platinum is used in

• hydrogenation reactions

• Combination of sulfur dioxide and oxygen

• Combination of Nitrogen and Hydrogen.

• synthesis of polythene

Nickel is used in

• Haber Process

• Hydrogenation reactions

• Synthesis of H₂SO₄

• Synthesis of Polythene

Transition elements forms large number of coordination compounds.

• True

• False

Cations of Transition elements forms coordination compounds because..

• These ions are very large and they do not have vacant d-orbitals

• These ions are very small and they do not have vacant d-orbitals

• These ions are very small and they have vacant d-orbitals

• These ions are very large and they have vacant d-orbitals