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Consider the following statements I. F...

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

Text Solution

Verified by Experts

The correct Answer is:
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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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SOLID STATE-EXERCISE 2
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  2. Consider the following statements I. NaCl and KCl show metal excess ...

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  3. Consider the following statements I. Fe, Co, Ni CrO2 are ferrimagnet...

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  4. CsBr crystallizes in a body centred cubic lattice,The unit cell length...

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  5. If NaCl is doped with 10^(-4)mol%of SrCl(2) the concentration of cati...

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  6. Which of the following statements is /are correc ? I. For a simple c...

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  7. The ratio of packing fraction in fcc, bcc, and cubic structure is, res...

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  8. How many Cs^+ ions occupy the second nearest neighbour location of a C...

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  9. If R is the radius of the octahedral voids and r is the radius of the...

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  10. What is the packing efficiency of a unit cell which is represented in...

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  11. TiO(2) is well known example of :

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  12. The edge length of a face centred cubic cell of an ionic substance is ...

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  13. A solid has a bcc structure. If the distance of closest approach betwe...

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  14. The ratio of closed packed atoms to tetrahedral holes in cubic close p...

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  15. A binary silod(A^(+) B^(-)) has a zine blende stracture with B inos co...

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  16. In a face centred cubic arrangement of A and B atoms whose A atoms are...

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  17. A given metal crystalline out with a cubic structure having edge leng...

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  18. The anions A from hexagonal close packing and atoms (M) occupy only tw...

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  19. A solid is made up of two elements A and B . Atoms B are in ccp arrang...

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  20. Structure of a mixed oxide is cubic closed - packed (ccp) .The cubic u...

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