Identification of Ions

A gas Q turns moist lead acetate paper silvery black. Identify the gas Q.

State your observation : When moist starch iodide paper is introduced into chlorine gas.

Distinguish between: Sodium nitrate and sodium sulphite [using dilute sulphuric acid].

Give a chemical test to distinguish between :

Calcium nitrate soln. and zinc nitrate soln .

State one chemical test between each of the following pairs:

Manganese dioxide and copper (II) oxide.

Identify the anion present in the following compounds :

When a solution of compound Y is treated with silver nitrate solution a white precipitate is obtained which is soluble in excess of ammonium hydroxide solution.

Select the correct answer from A, B, C and D. 

(i) The compound which is responsible for the green colour formed when ${\mathrm{SO}}_2$ is bubbled through acidified potassium dichromate solution.

A given white crystalline salt was tested as follows : A flame test on the salt gave a persistent golden-yellow colourisation. What conclusions can be drawn from this observation?

A given white crystalline salt was tested as follows: Addition of barium chloride solution into this solution gave a white precipitate. What conclusions can be drawnfrom this observation ?

Name the anion present in the given compound: Compound D when warmed with dilute sulphuric acid gives a gas which turns acidified dichromate solution green.

  Name the anion present in the given compound: The action of heat on the insoluble compound C produces a gas which turns lime water turbid.

Name the anion present in the given compound: When barium chloride solution is added to a solution of compound B, a white precipitate insoluble in dilute hydrochloric acid is formed.

Give one chemical test to distinguish between the following pairs of compound:

Iron (II) chloride soln. and iron (III) chloride soln.

The salt which in solution gives a pale green precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is:

State your observations when zinc chloride solution, zinc nitrate solution and zinc sulphate solutions are added individually to lead nitrate solution.

State your observations when zinc chloride solution, zinc nitrate solution and zinc sulphate solutions are added individually to barium chloride solution.

State your observations when lead nitrate solution and sodium chloride solution are mixed.

Distinguish by a chemical test.
Sulphuric acid from nitric acid and hydrochloric acid.

Distinguish by a chemical test.
Sodium chloride and sodium sulphide