Which of the following is/are electrolytes? (i) Sugar solution (ii) Sodium chloride (iii) Acetic...

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Which of the following is/are electrolytes?
(i) Sugar solution
(ii) Sodium chloride
(iii) Acetic acid
(iv) Starch solution
(a) (i) and (iv)
(b) (ii) and (iv)
(c) (ii) and (iii)
(d) (i) and (iii)
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