The number of electrons in 1 cm3 of metal would be of the order of_______________?

Related Mcqs:

1. A cold chisel is made of_______________?

   A. mild steel
   B. cast iron
   C. H.S.S.
   D. high carbon
   E. german silver

2. By severely deforming a metal in a particular direction it becomes _________________?

   A. ductile
   B. malleable
   C. homogeneous
   D. isotropic
   E. anisotropic

3. Railway rails are normally made of_______________?

   A. mild steel
   B. alloy steel
   C. high carbon
   D. tungsten steel
   E. cast iron steel

4. Pure iron is the structure of_______________?

   A. ferrite
   B. pearlite
   C. anstenite
   D. ferrite and cementite
   E. ferrite and pearlite

5. Delta iron occurs at temperature of_______________?

   A. room temperature
   B. above melting point
   C. between 1400°C and 1539°C
   D. between 910°C and 1400°C
   E. none of the above

6. A specimen of aluminium metal when observed under microscope shows __________________?

   A. B.C.C. crystalline structure
   B. F.C.C. crystal structure
   C. H.C.P. structure
   D. a complex cubic structure
   E. orthorhombic crystalline structure

7. Gun metal contains__________________?

   A. 70% copper and 30% zinc
   B. 90% copper and 10% tin
   C. 85-92% copper and rest tin with little lead and nickel
   D. 70-78% copper and rest tin
   E. 85-92% copper and rest zinc

8. The correct composition of Babbit metal is__________________?

   A. 87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi
   B. 90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg
   C. 87% Sn, 4% Cu, 8% Sb, 1% Al
   D. 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg
   E. none of the above

9. Babbit metal is a_________________?

   A. lead base alloy
   B. tin base alloy
   C. copper base alloy
   D. all of the above
   E. A. and C. above

10. Muntz metal contains copper and zinc in the ratio of________________?

    A. 50 : 50
    B. 40 : 60
    C. 60 : 40
    D. 20 : 80
    E. 80 : 20