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P Block Elements question

2021 · 27 Jul · Shift 2 · Q10
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P Block Elements question

2021 · 27 Jul · Shift 2 · Q10

JEE MainChemistryP Block ElementsMCQ+4 / −1
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 :
  1. A
    (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
  2. B
    (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
  3. C
    (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
  4. D
    (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
View written solutionFree

Correct answer: A

  1. Match each compound with its known effect/affected species

    (a) Carbon monoxide

    • Carbon monoxide binds strongly with haemoglobin to form carboxyhaemoglobin.
    • So, (a)→(iii)(a) \to (iii)(a)→(iii).

    (b) Sulphur dioxide

    • SO2\mathrm{SO_2}SO2​ damages plants and affects the stiffness of flower buds.
    • So, (b)→(iv)(b) \to (iv)(b)→(iv).

    (c) Polychlorinated biphenyls (PCBs)

    • PCBs are well known carcinogenic pollutants.
    • So, (c)→(i)(c) \to (i)(c)→(i).

    (d) Oxides of Nitrogen

    • Oxides of nitrogen are metabolized by pyrus plants.
    • So, (d)→(ii)(d) \to (ii)(d)→(ii).

  2. Final matching

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

  3. Compare with options

    This corresponds to Option A.

  4. Comparison with stored correct answer

    • Stored correct answer: A
    • Derived answer: A
    • Hence, they agree.
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