A
2 4 3 1
B
2 3 4 1
C
4 3 1 2
D
3 1 2 4
Correct answer: (b) 2 3 4 1
Explanation
- A
2 4 3 1
(a) 2 4 3 1. That makes Taxol a rodenticide and zinc phosphide an anticancer drug—the drug and poison are swapped.
- B
2 3 4 1
(b) 2 3 4 1. Kevlar is a synthetic aramid fibre; Taxol (paclitaxel) is an anticancer drug; zinc phosphide is a rodenticide; nitrocellulose is an explosive/propellant. (b) Official key.
- C
4 3 1 2
(c) 4 3 1 2. It opens Kevlar as rodenticide and ends nitrocellulose as fibre—both wrong.
- D
3 1 2 4
(d) 3 1 2 4. It calls Kevlar an anticancer drug and Taxol an explosive.
Summary. Official key is (b). Match 2-3-4-1: Kevlar fibre, Taxol anticancer, zinc phosphide rodent poison, nitrocellulose explosive.