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The correct statements among the following are:

a.	Fullerenes have dangling bonds.
b.	Fullerenes are cage-like molecules.
c.	Graphite is, thermodynamically, the most stable allotrope of carbon.
d.	Graphite is slippery and hard and therefore used as a dry lubricant in machines.

1. a and b
2. b and c
3. c and d
4. a and d

Subtopic: Structure & Properties of Allotropes of C |

70%

Level 2: 60%+

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Match the species in Column-I with their corresponding hybridisation in Column-II:

	Column-I (Species)		Column-II (Hybridisation)
A.	Boron in ${[B {(OH)}_{4}]}^{-}$	i.	sp²
B.	Aluminium in ${[Al {(H_{2} O)}_{6}]}^{3 +}$	ii.	sp³
C.	Carbon in Buckminsterfullerene	iii.	sp³d²
D.	Germanium in ${[{GeCl}_{6}]}^{2 -}$

Codes:

Subtopic: Structure & Properties of Allotropes of C | Properties of Structure of SiO2 & Other Compounds |

83%

Level 1: 80%+

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