One unit cell of NaCl contains

1.  1Na+and 1Cl-

2.  2Na+and 2Cl-

3.  4Na+and 4Cl-

4.  12Na+and 12Cl-

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4
Correct Answer :

4Na+and 4Cl-


Explanation :
No Explanation available for this question

The interparticle forces in solid hydrogen are :

1.  Van der Waal's forces

2.  Covalent bonds

3.  Hydrogen bonds

4.  Coordinate bonds

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4
Correct Answer :

Van der Waal's forces


Explanation :
No Explanation available for this question

In a structure, A atoms have fcc arrangement, B atoms occupy all the tetrahedral sites and C atoms occupy half the octahedral sites. The formula of the compound is

1.  A2B2C2

2.  A2B4C

3.  AB2C

4.  A4B2C

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4
Correct Answer :

A2B4C


Explanation :
No Explanation available for this question

A compound formed by elements A and B has a cubic structure in which A atoms are at the corners of the cube and B atoms are at the face centers. The formula of the compound is

1.  AB3

2.  A2B3

3.  A2B

4.  A4B3

View Answer  
4
Correct Answer :

AB3


Explanation :
No Explanation available for this question

Which of the following transition metal oxides is not paramagnetic

1.  TiO

2.  CuO

3.  VO

4.  TiO2

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4
Correct Answer :

TiO2


Explanation :
No Explanation available for this question

Pyroxenes belong to

1.  Pyrosilicates

2.  Sheet silicates

3.  Chain silicates

4.  Ring silicates

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4
Correct Answer :

Chain silicates


Explanation :
No Explanation available for this question

Which of the following is an example of three dimensional silicates

1.  Quartz

2.  Talc

3.  Asbestos

4.  Beryl

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4
Correct Answer :

Quartz


Explanation :
No Explanation available for this question

For tetrahedral coordination, the radius ratio, r+/r- is

1.  0.224 - 0.414

2.  0.414 - 0.526

3.  0.414 - 0.732

4.  0.732 - 1.0

View Answer  
4
Correct Answer :

0.224 - 0.414


Explanation :
No Explanation available for this question

The anions (Y) form hexagonal close packing and atoms (X) occupy only 2/3 of the octahedral voids in it, then the general formula of the compound is

1.  XY2

2.  X2Y3

3.  X3Y2

4.  XY3

View Answer  
4
Correct Answer :

X2Y3


Explanation :
No Explanation available for this question

An element (atomic mass = 100 g /mol) having bcc structure has unit cell edge 400 pm. The density of the element is:

1.  10.376gcm-3

2.  5.1888 gcm-3

3.  7.289 gcm-3

4.  2.144 gcm-3

View Answer  
4
Correct Answer :

5.1888 gcm-3


Explanation :
No Explanation available for this question
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