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Match List - I with List - II: List – I (compound) (a) Carbon monoxide (b) Sulphur dioxide (c) Polychlorinated biphenyls (d) Oxides of Nitrogen List – II (effect/affected species) (i) Carcinogenic (ii) Metabolized by pyrus plants (iii) Haemoglobin (iv) Stiffness of flower buds Choose the correct answer from the options given below:

1. (a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
2. (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
3. (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
4. (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

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

Solution

CO binds haemoglobin (iii); SO2 causes stiffness of flower buds (iv); polychlorinated biphenyls are carcinogenic (i); oxides of nitrogen are metabolized by Pyrus plants (ii). So (a)-iii,(b)-iv,(c)-i,(d)-ii (index 0).

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