CGPET 2021 Solved Paper

(A) Fullerene is the allotrope of carbon. Its molecular formula is mathrm‌C60 and has a shape like soccer ball. It contain twenty six-membered rings and twelve five-membered rings.
∴ Correct match of (A) is III.
(B) Promethium is a lanthanide with atomic symbol Pm and atomic number 61 .
∴ Correct match of (B) is I.
(C) Water is a Lewis base as it contain two lone pair of electrons.

∴ Correct match of (C) is IV.
(D) Lawrencium is a actinoid with symbol Lr and atomic number 103 .
∴ Correct match of (D) is II.
Hence, correct option is (a).