Analytical Chemistry Questions

Upon treatment with ammonical H2S , the metal ion that precipitates as a sulfide is -

A mixture of two colourless substances was dissolved in water. When gaseous Cl2 was passed through the solution, containing small quantity of CCl4 a violet colour developed in organic layer. Addition ...

Which one of the following metal salts produces a blue coloured bead in cobalt nitrate charcoal cavity test ?

The correct option(s) to distinguish nitrate salts of Mn2+ and Cu2+ taken separately is (are) :-

Which of the following does not give oxygen on heating ?

Which of the statements is not true ?

Passing H2S gas into a mixture of Mn2+, Ni2+, Cu2+ and Hg2+ ions in an acidified aqueous solution precipitates

Which of the statements is not true?

The Lassaigne′s extract is boiled with conc HNO3 while testing for halogens. By doing so it

Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. this is due to the formation of

27 g of aluminium react completely with how many grams of oxygen ?

The ion that cannot be precipitated by both HCl and H2S is :

The compound insoluble in acetic acid is :

The pair of compounds which cannot exists together in soution is :

Which onr amongst the following pairs of ions cannot be separated by H2S in dilute HCL ?

An aqueous solution contains Hg2+, Hg22+, Pb2+ and Cd2+. The addition of HCl (6N) will precipitate .

Sodium nitroprusside, when added to an alkaline solution of S2- ions produces purple clouration due to formation of :

An aqueous solution FeSO4.Al2(SO4)3 and chrome alum is heated with excess of Na2O2 and filtered. The materials obtained are :...

An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which dissolves on heating on heating. When hydrogen sulphide is passed through the hot acidic,...

A gas ′X′ is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolv...