Identify A, B, C, D and E.
A white substance A reacts with dilute `H_2SO_4` to produce a colourless gas B and a colourless solution C. The reaction between B and acidified `K_2Cr_2O_7` solution produces a green solution and slightly coloured precipitate D. The substance D burns in air to produce a gas E which reacts with B to yield D and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colourless liquid. Addition of aqueous `NH_3` or `NaOH` to C produces first a precipitate then a colourless solution

Identify A, B, C, D and E. A white substance (A) reacts with dilute H_(2)SO_(4) to produce a colourless gas (B) and a colourless solution ( C) .The reaction between (B) and acidified K_(2)Cr_(2)O_(7) solution produces a green solution and a slightly coloured precipitate (D) .The substance (D) burns in air to produce a gas (E) which reacts with (B) to yield (D) and a colourless liquid. Anhydrous copper sulphate is turned blue on addition of this colouless liquid.Addition of aqueous NH_(3) or NaOH to ( C) produces first a precipitate

A white substance A reacts with dilute H_(2)SO_(4) is produce a colourless B and acidified K_(2)Cr_(2)O_(7) solution produces a green solution and a slighly coloured precipitate D .The substance B to burns in air to produce a gas E which reacts with B ito yied D and a colouless liquid .Anhyhdrous copper sulphate is turned blue on addition of this colourless liquid addition od aqueous NH_(3) or NaOH to C produce first a precipitate which dissolve in the excess of the respective reagent to produce a clear solution in each case identify A,B,C, and E. Write the equation of the reaction involved.

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.

When SO_2 gas is passed through acidified K_2Cr_2O_7 solution, the colour of the solution changes to

A substance on treatment with dilute H_(2)SO_(4) liberates a colourless gas which produces (I) turbidity with baryta water and (ii) turns acidified dichromate solution green. The reaction indicates the presence of :

A substance on treatment with dilute H_(2)SO_(4) liberates a colourless gas which produces (I) turbidity with baryta water and (ii) turns acidified dichromate solution green. The reaction indicates the presence of :

A substance on treatment with dil H_(2)SO_(4) liberates a colourless gas which produces (i) turbidity with ba-ryts water and (ii) turns acidified dichromate solution green .The reaction indicates the presence of:

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour a smokeless flame to Bunsen burner. A,B,C, and D respectively are :

A white crystalline salt [A] reacts with dilute HCl to liberate a suffocatig gas [B] and also forms a yellow precipitate. The gas [B] turns potassium dichromatic acidified with dilute H_(2)SO_(4) to a green coloured solution [C]. The compound A, B and C are respectively

(a). A powdered substance (A) on treatment with fusion mixture gives a green coloured compound (B). (b). The solution of (B) The solution of (B) in boiling water on acidification with dilute H_2SO_4 gives a pink coloured compound (C).