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Four students P, Q, R and S noted the in...

Four students `P, Q, R` and `S` noted the initial colour of the solutions kept in beakers `I, II, III` and `IV`. After inserting zinc rods in each solution and leaving them undisturbed for two hours, the colour of each solution was again noted in the form of table given below :

Which student noted the colour change in all the four beakers correctly ?

A

P

B

Q

C

R

D

S

Text Solution

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The correct Answer is:
A
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