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Standard X
Chemistry
Introduction to Qualitative Analysis
Give one test...
Question

Give one test to distinguish between the following : - Iron (II) chloride solution and copper chloride solution.


A
Dirty green precipitate of iron (II) hydroxide formed where as in copper it gives bluish precipitate of copper formed
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B
Dirty green precipitate of iron (II) hydroxide formed where as in copper it gives black precipitate of copper formed
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C
Bluish precipitate of iron (II) hydroxide formed where as in copper it gives dirty green precipitate of copper formed
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D
Dirty red precipitate of iron (II) hydroxide formed where as in copper it gives bluish precipitate of copper formed
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Solution

The correct option is A Dirty green precipitate of iron (II) hydroxide formed where as in copper it gives bluish precipitate of copper formed
Iron (III) chloride solution

Copper chloride solution

When NaOH solution is added a dirty green precipitate of iron (III) hydroxide is formed.

When NaOH solution is added a bluish precipitate of copper (II) hydroxide is formed.


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Q. Choose the correct answer:
The salt which in solution gives a pale green precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is:
A. Iron (III) sulphate
B. Iron (II) sulphate
C. Iron (II) chloride
D. Iron (III) chloride
Q. The questions (i) to (v) refer to the following salt solutions listed (a) to (f):
(a) Copper nitrate
(b) Iron (II) sulphate
(c) Iron (III) chloride
(d) Lead nitrate
(e) Magnesium sulphate
(f) Zinc chloride

(i) Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution?
(ii) Which two solution will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
(iii) Which solution will give a white precipitate when either dilute hydrochloric acid or dilute sulphuric acid is added to it?
(iv) Which solution becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it?
(v) Which solution gives a white precipitate with excess ammonium hydroxide solution?
Q.

Select the correct answers :

(a) Colour of an aqueous solution of copper sulphate is

(i) Green (ii) Brown (iii) Blue (iv) Yellow

(b) Colour of the precipitate formed on adding NaOHNaOHNaOH solution to iron (II) sulphate solution is

(i) White (ii) Brown (iii) Green (iv) Pale blue

(c) A metal which produces hydrogen on reacting with alkali as well as with acid.

(i) Iron (ii) Magnesium (iii) Zinc (iv) Copper

Q. The questions (i) to (v) refer to the following salt solutions listed A to F:
A. Copper nitrate
B. Iron (II) sulphate
C. Iron (III) chloride
D. Lead nitrate
E. Magnesium sulphate
F. Zinc chloride
(i) Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by barium chloride solution?
(ii) Which two solutions will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
(iii) Which solution will give a white precipitate when either dilute hydrochloric acid or dilute sulphuric acid is added to it?
(iv) Which solution becomes a deep/inky blue colour when excess of ammonium hydroxide is added to it?
(v) Which solution gives a white precipitate with excess ammonium hydroxide solution?
Q. When sodium hydroxide solution is added to copper sulfate solution, a blue precipitate of copper hydroxide is formed along with sodium sulfate solution. What kind of chemical reaction takes place between them?
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