Verified Solution • 2025–26 Session moderate

QJEEM21Ch11f3: JEE Main 2021 Chemistry - Class 12 JEEM21Ch11f3 Solution: Match List - I with List - II : .tg…

Match List - I with List - II :

List - I
(compound)
List - II
(effect/affected species)
(a) Carbon monoxide (i) Carcinogenic
(b) Sulphur dioxide (ii) Metabolized by pyrus plants
(c) Polychlorinated biphenyls (iii) haemoglobin
(d) Oxides of Nitrogen (iv) Stiffness of flower buds


Choose the correct answer from the options given below :

Multiple Choice Options

  • A (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
  • B (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
  • C (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
  • D (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

Step-by-Step Verified Solution

A. If haemoglobin binds CO, it prevents the binding of O2 to haemoglobin due to the competition for same binding sites.

B. Higher conc. SO2 in air can cause stiffness of flower buds.

C. Polychlorinated biphenyls are carcinogenic (cancer causing) in humans as well as animals.

D. Certain plants, e.g. pinus, Juniparus, quercus, pyrus and vitis can metabolise nitrogen oxides. Hence, the correct match is

(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)

Related Learning Resources & Exam Preparation