Practical Chemistry

A white precipitate was formed when$BaCl_{2}$was added to water extract of an inorganic salt. Further, a gas$'X'$ with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The…

An organic compound ‘A’ is oxidized with$Na_{2}O_{2}$followed by boiling with$HNO_{3}.$The resultant solution is then treated with ammonium molybdate to yield a yellow percipitate. Based on a above…

By usual analysis, 1.00 g of compound $(\mathrm{X})$ gave 1.79 g of magnesium pyrophosphate. The percentage of phosphorus in compound $(X)$ is : (nearest integer) (Given, molar mass in $\mathrm{g} \mathrm{mol}^{-1}:…

Given below are two statements: Statement-I: The gas liberated on warming a salt with dil$H_{2}SO_{4}$, turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion. Statement-II:…

In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to :

Formation of which complex, among the following, is not a confirmatory test of$Pb^{2+}$ions

Which statement is not true with respect to nitrate ion test?

Match List-I with List-II List-I List-II Test/Reagents/Observation(s) Species detected (a) Lassaigne's Test (i) Carbon (b) Cu(II) oxide (ii) Sulphur (c) Silver nitrate (iii) $N,S,P$, and halogen (d) The sodium fusion…

In the following reaction sequence in aqueous solution, the species $X,\text{Y}$ and $\text{Z}$ respectively, are $S 2 O 3 2− → Ag + X Clear Solution → Ag + Y White Precipitate → With time Z Black Precipitate$

Paragraph: An aqueous solution of metal ion $\mathbf{M} 1$ reacts separately with reagents $\mathbf{Q}$ and $\mathbf{R}$ in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of…

Paragraph: An aqueous solution of metal ion $\mathbf{M} 1$ reacts separately with reagents $\mathbf{Q}$ and $\mathbf{R}$ in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of…

For the given aqueous reactions, which of the statement (s) is (are) true?