`FeS+H_2SO_4 to A+B↑`
Which of the following statement is incorrect about gas 'B'?
(a) It produces white ppt. with `FeCl_3` (b) It produces black ppt with (CH3COO)2Pb (C) It produces brown colour solution with sodium nitroprusside (d)It decolorises the purple colors of KMnO4

Which of the following pair of salts produce odourless gas with dil H_(2)SO_(4) ?

Which of the following salt will not produce black ppt on passing H_2S through their aqueous salt solutions in desired medium?

Which of the following salts is the most basic in aqueous solution? (a) Al(CN)_3 (b) CH_3COOK (c) FeCl_3 (d) Pb(CH_3COO)_2

Colourless salt (A) decolourise I_(2) solution and gives white precipitate (change to black) with AgNO_(3) solution. (A) also produces pink colour with FeCl_(3) solution. Identify (A) and explain reactions.

which of the following is most effective in coagulating ferric hydroxide sol? a. KCl b. FeCl_(3) c. Na_(2)SO_(4) d. K_(3)[Fe(CN)_(6)]

Which of the following statements (s) is (are) correct with reference to the ferrous and ferric ions? (a). Fe^(2+) gives brown colour with potassium ferricyanide. (b). Fe^(2+) gives blue precipitate with potassium ferricyanide. (c). Fe^(3+) gives red colour with potassium thiocyanate. (d). Fe^(3+) gives brown colour with potassium thiocyanate.

Sodium salt of an organic acid 'X' produces effervescence with conc. H_(2)SO_(4) . 'X' reacts with the acidified aqueous CaCl_(2) solution to give a white precipitate which decolourises acidic solution of KMnO_(4) 'X' is

NH_(3) solution was added to four semple solution in difference test tube and found the following observation about the precipitate. a. White ppt which is solution in oxcess of NH_(3) solution b.On heating which is white in cold but yellow on heating c. The cation present in (b) forms white ppt , with hypo solution which give black ppt on heating d. The cation present in (c ) forms soluble complex with excess of NH_(3) solution White ppt in (c) and the soluble complex from white ppt with the type solution is//are

A white substance (A) reacts with dilute H_(2)SO_(4) to produce a colourless suffocating gas (B) and a colourless solution (C )/ The reaction of gas (B) with potassium iodate and starch solution produce a blue colour solution. Aqueous Solution of (A) gives a white precipitate with BaCl_(2) solution which is soluble in dilute HCl . Addition of aqueous NH_(3) or NaOH to (C ) produced first a precipitate which dissolves in excess of the respective reagent to poduced a clear solution. Similarly addition of excess of potassium ferrocyanide to (C ) produced a precipitate (D) which also dissolves in aqeous NaOH giving a clear solution. Identify (A),(B),(C ) and (D ). Write the equation of the reactions involved.