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Light green (Compund A) overset(Delta)rarr White Reside (B) overset("High")underset("Temperature")rarrC+D+E i) D & E are two acidic gases ii) D is pased through HgCl_2 solution to give yellow ppt iii) E is passed through water first and then H_2S is passed, whith turbidity is obtained (iv) A is wter soluble and addition of HgCl_2 in it, white pp it obtained but white ppt does no turn into grey on addition of excess solution of A 'D' & 'E' are |
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Answer» `SO_2 & SO_3` 
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