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WorksheetsDiamonds and Carbon
Total questions: 12
Worksheet time: 10mins
Which type of Allotropic Modifications of Carbon does Diamond lie in ?
Amorphous Carbon
Crystalline Carbon
Sulphur
Phosphorus
What type of structure does a Diamond have ?
(a)
How many free electrons does a diamond have
1
3
None
4
A Diamond is neither a _________ of electricity nor heat.
Insulator
Semiconductor
Semipermeable
Conductor
Select the incorrect option(s) which are the uses of Diamonds.
Used in nuclear reactors as moderators
Manufacture of refractory crucible
Manufacture of thin tungsten wires
None of the above
What residue is formed when Diamond is heated above 700C-800C with the presence of oxygen ?
Graphite
No residue
Carbon Dioxide
Carbonado
Why does a Diamond sparkles ?
The light that exits the crystals undergoes repeated reflections within the crystal before it emerges. Therefore light is reflected which lends a sparkle to the Diamond.
The light that exists the Diamond undergrows repeated reflections within the crystal before it emerges. Therefore light is traped and lends a sparkle to the Dimond.
The light that enters the crystals undergoes repeated reflections within the crystal before it emerges. Therefore light is trapped and lends a sparkle to the Diamond.
The light that enters the Diamond undergoes vigorous reflections within the crystal before it appears. Therefore light is escaped and lends a sparkle to the Diamond.
What is the physical state of a Diamond
Solid
Transparent opaque solid with extraordinary brilliance.
Transparent solid which sparkles and is the hardest substance on earth.
Transparent with extraordinary brilliance.
Which element(s) exhibits allotropy ?
Carbon
Amorphous Carbon
Sulphur
Red Phosphorus
Why are diamonds used in jewelry/ornaments ?
(a)
Why are Diamonds used for cutting glass and other Diamonds ?
(a)
What residue/substance is formed when Diamond is heated above 600C-700C
(a)
