Local action in an electrochemical actio...

Local action in an electrochemical action can be prevented by

using by pure electrolytes in tw half cells

using very pure metal for anode

coating zinc anode with mercury

using pure graphite for cathode.

Text Solution

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The correct Answer is:

B,C

Local action leads to the eating away of the metal used as anode in an electrochemical cell. It is due to the presence of impurities in the metal used for making anode. These impurities help in setting up of tiny electrochemical reaction cells on the surface of anode which results in the eating away of the metal . it can be prevented by using very pure metals for anode or by coaing the zinc anode with mercury.

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Local action in an electrochemical cel .can be prevented by

using very pure electrolytes in two half cells

using yery pure metal for anode

coating zinc anode with mercury

using pure grapnite for cathode

Action and reaction

act on two different objects

have equal magnitude

have opposite directions

have resultant zero.

Reflex action is

Stimulus `to` sensory `to` motor `to` response

Stimulus `to` motor `to` sensory `to` response

Reception `to` motor `to` sensory `to` response

Sensory `to` stimulus `to` motor `to` response