MEDIUM
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Addition of to gives ppt
(a)White turning to red
(b)White turning to grey
(c)Black turning to white
(d)None of these

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Important Questions on Theoretical Principles of Experimental Chemistry
MEDIUM
A colorless aqueous solution contains nitrates of two metals, and . When it was added to an aqueous solution of , a white precipitate was formed. This precipitate was found to be partly soluble in hot water to give a residue and a solution . The residue was soluble in aq. and also in excess sodium thiosulfate. The hot solution gave a yellow precipitate with . The metals and , respectively, are

EASY
Which of the following ions does not liberate hydrogen gas on reaction with dilute acids?

MEDIUM
For the following Assertion and Reason, the correct option is
Assertion (A) : When (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.
Reason (R) : The equilibrium constant of is high because the solubility product is low.

MEDIUM
Which of the following compounds, on reaction with and gives yellow colour?

HARD
An aqueous solution of a salt X turns blood red on treatment with and blue on treatment with , X also gives a positive chromyl chloride test. The salt X is:

MEDIUM
When gas is passed into a mixture of and ion in an acidified aqueous solution, the precipitates formed are

MEDIUM
The pair(s) of ions where BOTH the ions are precipitated upon passing gas in presence of dilute , is (are)

HARD
Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is:

MEDIUM
The incorrect statement is:

MEDIUM
Upon treatment with ammoniacal , the metal ion that precipitates as a sulphide is

EASY
Which one of the following compounds is not a yellow colored compound ?

MEDIUM
The correct option(s) to distinguish nitrate salts of taken separately is(are)

MEDIUM
Copper sulphate solution reacts with to give

EASY
To an aqueous solution containing ions such as and was added , followed by . The total number of cations precipitated during this reaction is/are :

EASY
Match List - I with List - II :
List - I (Metal ion) | List - II (Group in Qualitative analysis) | ||
(a) | (i) | Group - III | |
(b) | (ii) | Group - IIA | |
(c) | (iii) | Group - IV | |
(d) | (iv) | Group - IIB |

MEDIUM
Consider the sulphides and Number of these sulphides soluble in is ___________ .

HARD
A solution containing a group cation gives a precipitate on passing A solution of this precipitate in dil. produces a white precipitate with solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is

MEDIUM
The cation that will not be precipitated by in the presence of dil HCl is:

HARD
In the following reaction sequence in aqueous solution, the species and respectively, are


