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A student takes Cu, Al, Fe and Zn piees ...

A student takes `Cu, Al, Fe` and `Zn` piees separtely in four test tubes labelled as I,II, III and IV respectively. He adds `10mL` of freshly prepared ferrous sulphate solution to each test tube observes the colour of the metal residue in each case.

He would observe a black residue in the test tube:

A

I and III

B

I and III

C

II and III

D

II and IV

Text Solution

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The correct Answer is:
B
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
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  15. When a student added a few drops of barium chloride solution to sodium...

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  16. A student placed a pinch of solid sodium hydrogencarbonate on a strip ...

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

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  18. For students A,B,C and D were studying the effect of the solutions of ...

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  19. Which of the following solutions having same concentration will have l...

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