Chemistry-
General
Easy

Question

A black colored compound (A)on reaction with diluteH2SO4 gives a gas(B) which on passing in a solution ofan acid (C) gives a white turbidity (D). Gas (B) when placed nan acidified solution of compound(E)gives precipitate(F)solubleindiluteHNO3.Afterboilingthissolution,whenanexcessofNH4OHisadded,bluecoloredcompound(G) is formed. To this solution on additionofCH3COOHandaqueous K4[Fe(CN)6],a chocolate precipitate(H)isobtainedOn addition of an aqueous solution ofBaCl2 to an aqueous solutionofE,awhitepptinsolubleinHNO3isobtained. Identify C:

  1. CH3COOH    
  2. HNO3    
  3. H2S    
  4. CuS    

The correct answer is: HNO3

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black colored compound(A)on reaction with dil. H2SO4 gives a gas(B)which onpassingin solution of anacid (C) gives a white turbidity (D). Gas (B)when passed in an acidified solution of a compound(E) gives a black precipitate (F) which is soluble in hot concentrated (C).After boiling this solution whene xcess of ammonia solution is added, a blue colored compound (G) is formed. To the solution of(E), onaddition of acetic acid and aqueous potassium ferro­cyanide, a chocolate brown precipitate (H) is formed.OnadditionofanaqueoussolutionofBaCl2toan aqueoussolutionof(E),white precipitate insoluble in HNO3isobtained. To which of the followinproperty, will the compound(E)respond?

black colored compound(A)on reaction with dil. H2SO4 gives a gas(B)which onpassingin solution of anacid (C) gives a white turbidity (D). Gas (B)when passed in an acidified solution of a compound(E) gives a black precipitate (F) which is soluble in hot concentrated (C).After boiling this solution whene xcess of ammonia solution is added, a blue colored compound (G) is formed. To the solution of(E), onaddition of acetic acid and aqueous potassium ferro­cyanide, a chocolate brown precipitate (H) is formed.OnadditionofanaqueoussolutionofBaCl2toan aqueoussolutionof(E),white precipitate insoluble in HNO3isobtained. To which of the followinproperty, will the compound(E)respond?

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