Question

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 one 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 deliquescent.
(ii) A compound which is insoluble in cold water, but soluble in hot water.
(iii) The compound responsible for the brown ring during the brown 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.

Answer 1

(i) A deliquescent compound is:
(b) Iron (III) chloride

(ii) A compound which is insoluble in cold water but soluble in hot water is:
(d) Lead (II) chloride

(iii) The compound responsible for the formation of brown ring during the brown ring test of nitrate ion is:
(a) Nitroso iron (II) sulphate

(iv) A compound whose aqueous solution is neutral in nature is:
(e) Sodium chloride

(v) The compound responsible for the green coloration of acidified potassium dichromate solution when sulphur dioxide is passed through it is:
(c) Chromium sulphate