Diamond is a well known allotrope of carbon. The hardness and high dispersion of light of diamond make it useful for both industrial applications and jewelry. Diamond is the hardest known natural mineral. This makes it an e4cellent abrasive and makes it hold polish and luster extremely well.
1. The compact and rigid_______-dimensional arrangement of carbon atoms in diamond gives it a high density.
(i) 2
(ii) 3
(iii) 1
(iv) 5
2. Each carbon atom in the diamond crystal is linked to_______other carbon atoms by covalent bond.
(i) 6
(ii) 3
(iii) 2
(iv) 4
3. Diamonds can be synthesised by subjecting pure carbon to
(i) Very high Pressure
(ii) Very high temperature
(iii) Both (i) and (ii)
(iv) Low Temperature
4. State true or false: The synthetic diamonds are small and distinguishable from natural diamonds.
(i) TRUE
(ii) FALSE
5. State true or false: Diamond conduct electricity due to unavailability of free electrons.
(i) TRUE
(ii) FALSE
