How many anions evolve brownish gas when treated with dil. /con. HCl ? – InterviewSolution

1.	How many anions evolve brownish gas when treated with dil. /con. HCl ? (i) CO_(3)^(2-) "" (ii)SO_(3)^(2-) "" (iii) NO_(2)^(-) "" (iv)Cl^(-) (v) Br^(-) "" (vi) NO_(3)^(-) "" (vii) CH_(3)CO O^(-)
Answer» ANSWER :1 (only III)

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