Match List-I with List-II and select the correct answer using the code given below the Lists : List-I (Allotrope of Carbon): A. Graphite B. Diamond C. Fullerene D. Graphene ; List-II (Property): 1. Thinnest and strongest material 2. Hardest natural substance 3. Very light and strong material 4. Soft and slippery material

Graphite has a layered structure with weak van der Waals forces between layers, making it soft and slippery (4). Diamond, with a strong covalent tetrahedral network, is the hardest known natural substance (2). Fullerenes (C₆₀ etc.) are cage-like carbon molecules that are very light yet relatively strong (3). Graphene, a single layer of carbon atoms in a hexagonal lattice, is the thinnest and strongest known material (1). Hence the correct matching is A-4, B-2, C-3, D-1.