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Standard X
Chemistry
Chemical Properties of Metals
Which of the ...
Question

Which of the following is not observed when aluminium is added to a solution of copper sulphate?


A

Final solution is light green.

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B

Solution is blue in the beginning.

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C

The brown mass is deposited on aluminium.

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D

Final solution is colourless.

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Solution

The correct option is A

Final solution is light green.


When aluminium is added to a solution of copper sulphate, final solution will not be light green.


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Q.

Which one is not observed when aluminium is added to solution of copper sulphate?


Q. Aluminium sulphate and copper sulphate solutions were taken in two test tubes I and II respectively. Iron filings were then added to both the solutions. The four students A, B, C and D recorded their observations in the form of a table as given below.
Student Aluminium sulphate solution (I) Copper sulphate solution (II)
A Colourless changes to light green Blue colour of the solution is retained
B Colour of colourless solution does not change Blue colour of the solution changes to light green
C Colourless solution changes to light blue Blue colour of the solution changes to colourless
D
 Colour of colourless solution remains unchanged Blue colour of the solution fades away
The correct set of observations have been recorded by the students :
(1) A
(2) B
(3) C
(4) D
Q. When an aluminium strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test tube, the change which is observed is:
(1) light green solution slowly turns colourless
(2) the lower end of the test tube becomes slightly warm
(3) a colourless gas with smell of burning sulphur is observed
(4) light green solution changes to blue
Q. A piece of granulated zinc was dropped into copper sulphate solution. After some time, the colour of the solution changed from :
(1) light green to blue
(2) blue to colourless
(3) light green to colourless
(4) bule to yellow
Q. A strip of copper is placed in four different colourless salt solutions. Which one of the solutions will finally turn blue?
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