Name the compound responsible for the brown ring during the brown ring test of nitrate ion.

Select from the list given (A to E) one substance in each case which matches the description given in parts (i) to (v). (Note: Each substance is used only once in the answer. (A) Nitroso iron (II) sulphate (B) Iron (III) chloride (C) Chromium sulphate (D) Lead (II) chloride (E) Sodium chloride (i) A compound which is yellow brown. (ii) A compound which is insoluble in cold water, but soluble in hot water. (iii) The compound responsible for the brown ring during the ring test of nitrate ion. (iv) A compound whose aqueous solution is neutral in nature. (v) The compound which is responsible for the green colouration when sulphur dioxide is passed through acidified potassium dichromate solution.

In the ring test for identification of nitrate ion, what is the formula of the compound responsible for the brown ring formed at the interface of two liquids ?

Which of the following complexes is responsible for the brown colour of the ring formed in the ring test for the nitrates?

Derive the geometry of the complex compound corresponding to the brown ring in nitrate test Predict the magnetic moment of the complex .

Which pigment is responsible for brown colour of brown algae?

Answer the following questions pertaining to the brown ring test for nitric acid : State why the unstable brown ring decomposes completely on disturbing the test tube .

Answer the following questions pertaining to the brown ring test for nitric acid : Give a reason why the brown ring does not settle down at the bottom of the rest tube.

The ring test is given by

Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.

The brown compound formed in the ring test for nitrates contains the ion