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IMPORTANT
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Aq. Solution of reacts with to form yellow precipitate. The cation(s) present in is/are:
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Important Questions on Qualitative Inorganic Salt Analysis
MEDIUM
JEE Main
IMPORTANT
Potassium chromate solution is added to aqueous solutions of metal nitrate. The yellow precipitate thus obtained is insoluble in acetic acid. These are subjected to flame test, flame colour of individual precipitate is/are
HARD
JEE Main
IMPORTANT
Which of the following aqueous solution of cation(s) give(s) white precipitate with and solution and formed precipitate is/are further completely dissolved in one of the excess reagent?
MEDIUM
JEE Main
IMPORTANT
Saturated solution of is heated at in a closed container. The product obtained is treated with solution. What is/are the most suitable observation(s)?
HARD
JEE Main
IMPORTANT
and can be distinguished by which of the following reagent(s).
HARD
JEE Main
IMPORTANT
White precipitate in test tube "c" and the soluble complex formed from white precipitate with the hypo solution is/are (This question from book is not having information hence the question is reframed as given below).
A salt solution when treated with ammonia forms a white precipitate. On addition of excess ammonia, the precipitate is insoluble. When the same solution is treated with hypo white precipitate is formed; when in excess amount of hypo is completely soluble. When the white precipitate formed from treatment of hypo is heated, it turns black. Identify the white precipitate and its soluble complex.
HARD
JEE Main
IMPORTANT
When a white crystalline compound is heated with and concentrated a reddish-brown gas is evolved. On passing into caustic soda solution a yellow coloured solution of is obtained. Neutralising the solution of with acetic acid and on subsequent addition of lead acetate, a yellow precipitate is obtained. When is heated with solution, a colourless gas is evolved and on passing this gas into solution, a reddish-brown precipitate is formed. Identify and . Write the equations of all the reactions involved.
HARD
JEE Main
IMPORTANT
Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas and an alkaline solution. The solution on exposure to air produces a thin solid layer of on the surface. Identify the compounds and .
HARD
JEE Main
IMPORTANT
An aqueous blue coloured solution of a transition metal sulphate reacts with in acidic medium to give a black precipitate , which is insoluble in the warm aqueous solution of . The blue solution, on treatment with in weakly acidic medium, turns yellow and produces a white precipitate . Identify the transition metal ion. Write the chemical reactions involved in the formation of and .
