WorksheetsXII UNIT 6 PART 5
Total questions: 10
Worksheet time: 5mins
The vacant space in bcc lattice unit cell is ………..
48%
23%
32%
26%
Which is the packing fraction in simple cubic unit cell?
52.31%
100%
68%
75%
The packing fraction in bcc arrangement is ………..
52.3 1%
68%
100%
80%
Which one of the following is the packing efficiency in fcc unit cell?
74%
52.6 1%
100%
68%
In bcc cubic pattern …………… of the available volume is occupied.
68%
48%
78%
14%
If the third layer arrangement is ABA arrangement, it is called …………… arrangement.
hcp or hexagonal close packed
ccp or cubic close packed
both (a) & (b)
none of these
If third layer arrangement is abcarrangment, it is known as …………… arrangement.
hcp or hexagonal close packed
ccp or cubic close packed
both a & b
none of these
In both …………… and …………… arrangements, the coordination number of each sphere is 12.
hcp, ccp
hcp, fcc
bcc, ccp
none of these
All the metals in the periodic table, only ------------ crystallizes in simple cubic pattern.
polonium
titanium
vanadium
scandium
The cubic close packing is based on the ---------- unit cell.
simple centered cubic
body centered cubic
face centered cubic
none of these
