The number of atoms per unit cell in B.C.C. structure is_____________?

Related Mcqs:

1. The tiny block formed by the arrangement of a small group of atoms is called the____________?

   A. unit cell
   B. space lattice
   C. either A. or (b)
   D. none of the above

2. The impurity atoms is semiconductors_____________?

   A. inject more charge carriers
   B. reduce the energy gap
   C. increase the kinetic energy of valence electrons
   D. all of the above

3. is an element used in semiconductors whose atoms have three valence electrons?

   A. An acceptor
   B. A donor
   C. Germanium
   D. Silicon

4. The co-ordination number of a simple cubic structure is______________?

   A. 2
   B. 4
   C. 6
   D. 8

5. The structure sensitive property of a super conductor is______________?

   A. critical magnetic field
   B. transition temperature
   C. critical current density
   D. none of the above

6. Most of the common metals have _________ structure?

   A. linear
   B. hexagonal
   C. orthorhombic
   D. cubic

7. The covalent bond is formed by_______________?

   A. transfer of electrons between atoms
   B. sharing of electrons between atoms
   E. sharing of variable number of electrons by a variable number of atoms
   D. none of the above

8. highest conductivity_____________?

   B. lowest temperature co-efficient
   C. good mechanical strength
   D. good corrosion resistance
   E. easy solderable and drawable quality
   F. all of the above

9. Non-linear resistors______________?

   A. produce harmonic distortion
   B. follows Ohm’s law at low temperatures only
   C. result in non-uniform heating
   D. none of the above

10. Due to which of the following fact, in India, aluminium is replacing copper ?

    A. Aluminium is more ductile and malleable than copper
    B. Aluminium is available in plenty, cheaper and lighter than copper
    C. Aluminium has lower resistivity than that of copper
    D. Aluminium has less temperature co-efficient than copper