HARD
JEE Main
IMPORTANT
Earn 100
Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is:
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Important Questions on Qualitative Analysis
MEDIUM
JEE Main
IMPORTANT
A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the before mentioned solution, a white precipitate is obtained which does not dissolve in dilute nitric acid. The anion is:
HARD
JEE Main
IMPORTANT
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
JEE Main
IMPORTANT
The cation that will not be precipitated by in the presence of dil HCl is:
MEDIUM
JEE Main
IMPORTANT
During the qualitative analysis of salt with cation , addition of a reagent to alkaline solution of the salt gives a bright red precipitate. The reagent and the cation present respectively are :
MEDIUM
JEE Main
IMPORTANT
Match List I with List II.
| List-I (Anion) |
List-II (gas evolved on reaction with dil. ) |
||
| (A) | (I) |
Colourless gas which turns lead acetate paper black. |
|
| (B) | (II) |
Colourless gas which turns acidified potassium dichromate solution green. |
|
| (C) | (III) | Brown fumes which turns acidified KI solution containing starch blue. | |
| (D) | (IV) | Colourless gas evolved with brisk effervescence, which turns lime water milky. |
Choose the correct answer from the options given below
HARD
JEE Main
IMPORTANT
A white precipitate was formed when was added to water extract of an inorganic salt. Further, a gas with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The anion present in the inorganic salt is:
MEDIUM
JEE Main
IMPORTANT
cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of
EASY
JEE Main
IMPORTANT
An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :
