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Question

When electric current is passed through a cell having an electrolyte, the positive ions move towards cathode and negative ions towards the anode. If the cathode is pulled out of the solution :



A
the positive and negative ions will move towards anode
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B
the positive ions will start moving towards anode while negative ions stop moving
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C
the negative ions will continue to move towards anode while positive ions stop moving
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D
the positive and negative ions will start moving randomly
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Solution

The correct option is B the positive and negative ions will start moving randomly
During electrolysis, the ions move towards respective electrodes under the influence of an electric current. When the cathode is pulled out of solution, the electric current will stop. Hence ions will move randomly due to convection currents or thermal motion.

Chemistry

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