Consider the following statements I. Fe, Co, Ni `CrO_2` are ferrimagnetic substances . II. MnO is ferrimagnetic in nature III. `H_2O` , NaCl are param
Consider the following statements
I. Fe, Co, Ni `CrO_2` are ferrimagnetic substances .
II. MnO is ferrimagnetic in nature
III. `H_2O` , NaCl are paramagnetic in nature
`MgFe_2O_4 " and " ZnFe_2O_4` are antiferromagnetic in nature
Which of the above statements are true ?
A. I and II
B. III and IV
C. II and IV
D. None of these
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Correct Answer - D
Fe, Co , Ni, `CrO_2` are ferromagnetic in nature
MnO is antiferromagnatic in nature
`H_2O` , NaCl are diamagnetic in nature
`MgFe_2O_4 " and " ZnFe_2O_4` are ferrimagnetic in nature .
Hence , none of the statements is true
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