A compound is formed by elements A and B. This crystallizes in the cubic structure where the A atoms are at the corners of the cube and B atoms are at the body centers. The simplest formula of the compound is

1.  AB

2.  A6B

3.  A8B4

4.  AB6

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4
Correct Answer :

AB


Explanation :
No Explanation available for this question

The example of ortho silicates is

1.  Mg2SiO4

2.  MgCaSi2O6

3.  Be3Al2Si6O5

4.  Clay

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4
Correct Answer :

Mg2SiO4


Explanation :
No Explanation available for this question

Fraction of total volume occupied by atoms in a simple cubic cell is

1.  π/2

2.  √3π/8

3.  √2π/6

4.  π/6

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4
Correct Answer :

π/6


Explanation :
No Explanation available for this question

Which of the following is an example of covalent solid

1.  Silicon carbide

2.  BaSO4

3.  Solid CO2

4.  Iodine

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4
Correct Answer :

Silicon carbide


Explanation :
No Explanation available for this question

If the alignment of magnetic moments in a substance is in a compensatory way so as to give zero net magnetic moment, then the substance is said to be

1.  Ferromagnetic

2.  Anti-ferromagnetic

3.  Ferrimagnetic

4.  Diamagnetic

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4
Correct Answer :

Anti-ferromagnetic


Explanation :
No Explanation available for this question

Which of the following transition metal oxides is not an insulator

1.  CrO2

2.  V2O5

3.  FeO

4.  MnO2

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4
Correct Answer :

CrO2


Explanation :
No Explanation available for this question

When molten zinc is cooled to solid state, it assumes hcp structure. Then the number of nearest neighbours of zinc atoms will be

1.  4

2.  6

3.  8

4.  12

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4
Correct Answer :

12


Explanation :
No Explanation available for this question

The normal spinel structure is adopted by

1.  CsCl

2.  Mg Al2O4

3.  FeO

4.  Fe3O4

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4
Correct Answer :

Mg Al2O4


Explanation :
No Explanation available for this question

Schottky defect in crystals is observed when

1.  Unequal number of cations and anions are missing from the lattice

2.  Equal number of cations and anions are missing from the lattice

3.  An ion leaves its normal site and occupies an interstitital site

4.  Density of the crystal is increased

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4
Correct Answer :

Equal number of cations and anions are missing from the lattice


Explanation :
No Explanation available for this question

A metal crystallizes in cubic close packed (ccp). The atomic radius of metal is 144pm and its atomic mass is 197a.m.u. Its density is

1.  19.4gcm-3

2.  1.94gcm-3.

3.  29.4gcm-3

4.  2.94gcm-3

View Answer  
4
Correct Answer :

19.4gcm-3


Explanation :
No Explanation available for this question
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