6. The ratios of ðh
2 + k
2 + l
2
Þ obtained as 2 : 4 : 6 : 8 : 10 : 12 for allowed
reflections correspond to:
(a) SC
(b) BCC
(c) FCC
(d) DC
7. The ratios of ðh
2 + k
2 + l
2
Þ obtained as 3 : 4 : 8 : 11 : 12 : 16 : 19 : 20 for
allowed reflections correspond to:
(a) SC
(b) BCC
(c) FCC
(d) DC
8. The first three S-values obtained from the powder pattern of a given unknown
cubic form of material are 56.8, 94.4 and 112.0 mm, respectively. If the radius
of the camera is 57.3 mm and the wavelength of the radiation used is 1.54 Å, its
lattice parameter is:
(a) 8.44 Å
(b) 7.44 Å
(c) 6.44 Å
(d) 5.44 Å
9. The first three S-values obtained from the powder pattern of a given unknown
cubic form of material are 56.8, 94.4 and 112.0 mm, respectively. If the radius
of the camera is 57.3 mm and the wavelength of the radiation used is 1.54 Å,
crystal structure of the unknown cubic form is:
(a) SC
(b) BCC
(c) FCC
(d) DC
10. The first three S-values obtained from the powder pattern of a given unknown
cubic form material are 24.95, 40.9 and 48.05 mm, respectively. If the radius of
the camera is 57.3 mm and Molybdenum K a radiation of wavelength used is
0.71 Å. Its lattice parameter is:
(a) 5.66 Å
(b) 6.66 Å
(c) 7.66 Å
(d) 8.66 Å
9.1 Steps in Crystal Structure Determinations
371
2 + k
2 + l
2
Þ obtained as 2 : 4 : 6 : 8 : 10 : 12 for allowed
reflections correspond to:
(a) SC
(b) BCC
(c) FCC
(d) DC
7. The ratios of ðh
2 + k
2 + l
2
Þ obtained as 3 : 4 : 8 : 11 : 12 : 16 : 19 : 20 for
allowed reflections correspond to:
(a) SC
(b) BCC
(c) FCC
(d) DC
8. The first three S-values obtained from the powder pattern of a given unknown
cubic form of material are 56.8, 94.4 and 112.0 mm, respectively. If the radius
of the camera is 57.3 mm and the wavelength of the radiation used is 1.54 Å, its
lattice parameter is:
(a) 8.44 Å
(b) 7.44 Å
(c) 6.44 Å
(d) 5.44 Å
9. The first three S-values obtained from the powder pattern of a given unknown
cubic form of material are 56.8, 94.4 and 112.0 mm, respectively. If the radius
of the camera is 57.3 mm and the wavelength of the radiation used is 1.54 Å,
crystal structure of the unknown cubic form is:
(a) SC
(b) BCC
(c) FCC
(d) DC
10. The first three S-values obtained from the powder pattern of a given unknown
cubic form material are 24.95, 40.9 and 48.05 mm, respectively. If the radius of
the camera is 57.3 mm and Molybdenum K a radiation of wavelength used is
0.71 Å. Its lattice parameter is:
(a) 5.66 Å
(b) 6.66 Å
(c) 7.66 Å
(d) 8.66 Å
9.1 Steps in Crystal Structure Determinations
371