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Solution


Q.

In an attempt to demonstrate electrical conductivity through an electrolyte, the following apparatus was set up. Which among the following statement(s) is(are) correct


(a) Bulb will not glow because electrolyte is not acidic.
(b) Bulb will glow because NaOH is a strong base and furnishes ions for conduction.
(c)  Bulb will not glow because circuit is incomplete.
(d) Bulb will not glow because it depends upon the type of electrolytic solution.
1 (i) and (iii)  
2 (ii) and (iv)  
3 (ii) only  
4 (iv) only  

Ans.

(2)
Bulb will glow because NaOH is a strong base that dissociates completely in water into Na+ ions and OH- ions which are responsible for electrical conductivity.