Consider the above reaction, and choose the correct statement :

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 :

If the Thompson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been :

Number of Cl = O bonds in chlorous acid, chloric acid and perchloric acid respectively are :