The Solid State Test

The Solid State

This is The Solid State Test-05 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Group 14 element is converted to p – type semi conductor by dopping it with
  • A
    P
  • B
    As
  • C
    Mg
  • D
    B
    Correct
2
Which crystal system has $a \ne b \ne c$?
  • A
    B Cubic
  • B
    Trigonal
  • C
    Orthorohombic
    Correct
  • D
    Tetragonal
3
A substance forms face centered cubic crystals. Its density is 1.984 $g/cm^3$ and the length of the edge of the unit cell is 630 pm. Calculate the molar mass in g/mol?
  • A
    149.35
  • B
    18.66
  • C
    74.65
    Correct
  • D
    29.85
4
A metal has a body centered cubic crystal structure. The density of the metal is 5.96$g/cm^3$Find the volume of the unit cell if atomic mass of metal is 50.
  • A
    $1.39 \times {10^{--23}}c{m^3}$
  • B
    $2.786{\text{ }} \times \,\,{10^{--23}}c{m^3}$
    Correct
  • C
    $5.572 \times {10^{--23}}c{m^3}$
  • D
    16.77
5
The hardest substance among the following is
  • A
    Graphite
  • B
    Ti
  • C
    Be2C
  • D
    SiC
    Correct
6
The following diagram shows
Question 6 figure 1
  • A
    F – centers
    Correct
  • B
    Frenkel defect
  • C
    Interstitial
  • D
    Schottky defect
7
In n – type semiconductor current is carried by
  • A
    negative hole
  • B
    positive hole
  • C
    Excess electron
    Correct
  • D
    free electron
8
The following diagram shows
Question 8 figure 1
  • A
    F – centers
  • B
    Interstitial
  • C
    Schottky defect
  • D
    Frenkel defect
    Correct
9
Which trasition metal oxide has appearance and conductivity like that of copper?
  • A
    Ferric oxide
  • B
    Titanium oxide
  • C
    silicon oxide
  • D
    Rhenium oxide
    Correct
10
Which among the following is not an example of amorphous solids?
  • A
    Graphite
    Correct
  • B
    Quartz
  • C
    Coke
  • D
    Glass
11
Which among the following is not an example of amorphous solids?
  • A
    Graphite
    Correct
  • B
    Coke
  • C
    Quartz
  • D
    Glass
12
An atom located at the body center of a cubic unit cell is shared by
  • A
    2 adjacent unit cells
  • B
    8 adjacent unit cells
  • C
    no other unit cells
    Correct
  • D
    4 adjacent unit cells
13
Calculate the number of unit cells present in 1 g of gold which has face centered cubic lattice.
  • A
    Option A
  • B
    Option B
  • C
    Option C
  • D
    Option D
    Correct
14
Example of ferromagnetic substance is
  • A
    $KMnO_4$
  • B
    Co
    Correct
  • C
    $Fe_3O_4$
  • D
    NaCl
15
Which among the following is an example of non – polar molecule?
  • A
    Methane
    Correct
  • B
    Water
  • C
    Diethyl ether
  • D
    Ethyl alcohol