Classification of Solids
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CHXII01:THE SOLID STATE

318715 Which of the following is an amorphous solid?

1 Graphite
2 Quartz glass \(\left(\mathrm{SiO}_{2}\right)\)
3 Chrome alum
4 Silicon carbide ( \(\mathrm{SiC})\)
CHXII01:THE SOLID STATE

318716 Silica \(\left(\mathrm{SiO}_{2}\right)\) can be crystalline as well as amorphous, with following properties:
I. Crystalline
II. The \(\mathrm{SiO}_{4}^{2-}\) tetrahedra randomly joined giving rise to polymeric chains of three dimensional sheets
III. Have high and sharp M.P.
Which of I, II and III are not matched with amorphous solid?

1 I
2 II
3 I, III
4 II
CHXII01:THE SOLID STATE

318717 Under which situations can an amorphous substance change to crystalline form?

1 By heating at certain temperature
2 By heating at high temperatures
3 By refrigeration
4 Cooling to absolute zero
CHXII01:THE SOLID STATE

318718 Glass is an example of

1 Pseudo solid
2 True soild
3 Super cooled liquid
4 Both (1) and (3)
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CHXII01:THE SOLID STATE

318715 Which of the following is an amorphous solid?

1 Graphite
2 Quartz glass \(\left(\mathrm{SiO}_{2}\right)\)
3 Chrome alum
4 Silicon carbide ( \(\mathrm{SiC})\)
CHXII01:THE SOLID STATE

318716 Silica \(\left(\mathrm{SiO}_{2}\right)\) can be crystalline as well as amorphous, with following properties:
I. Crystalline
II. The \(\mathrm{SiO}_{4}^{2-}\) tetrahedra randomly joined giving rise to polymeric chains of three dimensional sheets
III. Have high and sharp M.P.
Which of I, II and III are not matched with amorphous solid?

1 I
2 II
3 I, III
4 II
CHXII01:THE SOLID STATE

318717 Under which situations can an amorphous substance change to crystalline form?

1 By heating at certain temperature
2 By heating at high temperatures
3 By refrigeration
4 Cooling to absolute zero
CHXII01:THE SOLID STATE

318718 Glass is an example of

1 Pseudo solid
2 True soild
3 Super cooled liquid
4 Both (1) and (3)
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CHXII01:THE SOLID STATE

318715 Which of the following is an amorphous solid?

1 Graphite
2 Quartz glass \(\left(\mathrm{SiO}_{2}\right)\)
3 Chrome alum
4 Silicon carbide ( \(\mathrm{SiC})\)
CHXII01:THE SOLID STATE

318716 Silica \(\left(\mathrm{SiO}_{2}\right)\) can be crystalline as well as amorphous, with following properties:
I. Crystalline
II. The \(\mathrm{SiO}_{4}^{2-}\) tetrahedra randomly joined giving rise to polymeric chains of three dimensional sheets
III. Have high and sharp M.P.
Which of I, II and III are not matched with amorphous solid?

1 I
2 II
3 I, III
4 II
CHXII01:THE SOLID STATE

318717 Under which situations can an amorphous substance change to crystalline form?

1 By heating at certain temperature
2 By heating at high temperatures
3 By refrigeration
4 Cooling to absolute zero
CHXII01:THE SOLID STATE

318718 Glass is an example of

1 Pseudo solid
2 True soild
3 Super cooled liquid
4 Both (1) and (3)
Join With Us for More Updates
CHXII01:THE SOLID STATE

318715 Which of the following is an amorphous solid?

1 Graphite
2 Quartz glass \(\left(\mathrm{SiO}_{2}\right)\)
3 Chrome alum
4 Silicon carbide ( \(\mathrm{SiC})\)
CHXII01:THE SOLID STATE

318716 Silica \(\left(\mathrm{SiO}_{2}\right)\) can be crystalline as well as amorphous, with following properties:
I. Crystalline
II. The \(\mathrm{SiO}_{4}^{2-}\) tetrahedra randomly joined giving rise to polymeric chains of three dimensional sheets
III. Have high and sharp M.P.
Which of I, II and III are not matched with amorphous solid?

1 I
2 II
3 I, III
4 II
CHXII01:THE SOLID STATE

318717 Under which situations can an amorphous substance change to crystalline form?

1 By heating at certain temperature
2 By heating at high temperatures
3 By refrigeration
4 Cooling to absolute zero
CHXII01:THE SOLID STATE

318718 Glass is an example of

1 Pseudo solid
2 True soild
3 Super cooled liquid
4 Both (1) and (3)
For More Updates join with Us