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An iron nail was dropped into copper sul...

An iron nail was dropped into copper sulphate solution. After some time, the colour of the solution changed from :

A

light green to blue

B

blue to light green

C

light green to colourless

D

blue to yellow

Text Solution

Verified by Experts

The correct Answer is:
B
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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. Which of the following mixture can be separated completely by the proc...

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  2. Four set ups as given here were arranged to identify the gas evolved w...

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  3. An iron nail was dropped into copper sulphate solution. After some tim...

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  4. A student was asked by her science teacher to prepare a true solution....

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  5. A student placed a clean iron nail in blue coloured copper sulphate so...

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  6. When a student added a few drops of barium chloride solution to sodium...

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  7. A student was asked to carry out a chemical reaction by placing four d...

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  8. We can show that is more reactive than copper :

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  9. A student sets up an apparatus to determine to melting point of ice. H...

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  10. What are canal rays?

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  11. If an atom contains one electron and one proton, will it carry any cha...

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  12. On the basis of Thomson’s model of an atom, explain how the atom is ne...

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  13. On the basis of Rutherford’s model of an atom, which sub- atomic parti...

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  14. Draw a sketch of Bohr’s model of an atom with three shells.

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  15. What do you think would be the observation if the alpha-particle scatt...

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  16. Name the three sub-atomic particles of an atom.

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  17. Helium atom has an atomic mass of 4u and two protons in its nucleus. H...

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  18. If K and L shells of an atom are full, then what would be the total nu...

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  19. How will you find the valency of chlorine, sulphur and magnesium ?

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  20. If number of electrons in an atom is 8 and number of protons is also 8...

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