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An Intiative by Sri Chaitanya
a
to provide a link between two half cells
b
to allow ions to go from one cell to another
c
to keep the emf of the cell positive
d
to maintain electrical neutrality of the solution in two half cells
answer is D.
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Detailed Solution
In galvanic cell if there is no salt bridgeAnode looses electrons and positive charge is accumulated.Cathode gains electrons and negative charge is accumulated. Accumulation of charges prevents flow of electrons and cell reaction does not occur. Salt bridge is presentPrevents accumulation of charges by flowing the ions of elctrolyte of saltbridge in opposite direction and fecilitates flow of electrons.