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Solid State Tes...

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  • Question 1
    4 / -1

    For the structure given below the site marked as S is a
    For the structure given below the site marked as S is a:

  • Question 2
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    Which of the following statements is not about the voids?

  • Question 3
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    In ABC packing if the number of atoms in the unit cell is n then the number of tetrahedral voids in the unit cell is equal to:

  • Question 4
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    If the radius of an octahedral void is r and the radius of atoms in close packing is R, then the relation between r and R is :

  • Question 5
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    A metal crystallises into a lattice containing a sequence of layers as AB AB AB ... . What percentage of voids are left in the lattice?

  • Question 6
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    In ccp arrangement the pattern of successive layers can be designated as

  • Question 7
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    Which of the following statements is not correct about hexagonal close packing?

  • Question 8
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    A crystalline structure has radius ratio (r+/r-)  in the range of 0.225 - 0.414. The coordination number and arrangement of anions around the cations are:

  • Question 9
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    A Crystal lattice with alternate +ve "and "-veions has radius ratio of 0.524. The coordination number of lattice is

  • Question 10
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    A solid AB has a rock salt structure. If radius of cation A+ is 120 pm, what is the minimum value of radius of B− anion?

  • Question 11
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    A crystal formed by two elements X and Y in cubic structure. X atoms are at the corners of cube while Y atoms are at the face center. The formula of he compound will be:

  • Question 12
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    If three elements X,Y and Z crystallizes in a ccp lattice with the X atoms at the corner, Y atoms at the cube centre and Z atom at the edge centre the formula of the compound will be:

  • Question 13
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    A compound is formed by two elements Y and Z. The element Z forms ccp and atoms Y occupy 1/3rd of tetrahedral voids. The formula of the compound is

  • Question 14
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    A cubic solid is made up of two elements P and Q. Atoms of P are present at the corners of the cube and atoms of Q are present by body centre. What is the formula of the compound and what are coordination number of P and Q?

  • Question 15
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    How many chloride ions are surrounding sodium ion in a sodium chloride crystal?

  • Question 16
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    In NaCl structure,

  • Question 17
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    NaCl type crystal (with coordination no. 6:6) can be converted into CsCl type crystal (with coordination no. 8:8) by applying:

  • Question 18
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    Coordination number of Cs+ and Cl- in CsCl crystal are:

  • Question 19
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    In zinc blende structure,

  • Question 20
    4 / -1

    Consider the unit cell given below :

    The unit cell shown in the figure belongs to

  • Question 21
    4 / -1

    Consider the unit cell given below :

    The coordination number of Y will be

  • Question 22
    4 / -1

    Consider the unit cell given below :

    Which of the following about the above structure is not correct?

  • Question 23
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    In  CaF2 type (fluorite structure),  Ca2+ ions form__(A)___ structure and F ions are present in all  __(B)___ voids. The coordination number of Ca2+ is ___(C)___ and F−  is___(D)____.
    (A), (B), (C) and (D) respectively are:

  • Question 24
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    A unit of BaCl2 (fluorite structure) is made up of:

  • Question 25
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    Which of the following structures is not correctly matched ?

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