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Biology; Chemistry; Physics: Post your doubts here!

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They had non electrolyte,like sugar or ethanol i think....they dont allow electricity to flow...
It was solid NaCl ,as in one paper there was a similar question, about in which circuit will the bulb be least bright.
I chose mercury, but it was wrong and the answer was one where there was NaCl (solid)
 
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It was solid NaCl ,as in one paper there was a similar question, about in which circuit will the bulb be least bright.
I chose mercury, but it was wrong and the answer was one where there was NaCl (solid)
idk... in past paper 2s it always asked why solid NaCl doesn't conduct.
 
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Yes they do flow.

Anode --> Cu --> Cu2+ + 2e
On cathode --> Cu 2+ 2e --> Cu

I've seen the diagram in books and it had a bulb which lighted :p

Which book? That's not possible :p
If electricity is flowing when their is NO difference in re-activity, it would definitely flow when their is Ag and Cu, which have different re-activities.
 
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What you guys dont understand is that it cant be D because Ag and Cu are right beside each other. The voltage produced is very minimal. Like Mg and Ag say ja kar koi 2 V produce hoti hai.
 
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Yes they do flow.

Anode --> Cu --> Cu2+ + 2e
On cathode --> Cu 2+ 2e --> Cu

I've seen the diagram in books and it had a bulb which lighted :p
The anode will dissolve over time, so how will the circuit be completed
 
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I dont get why you cant understand,it was such a simple MCQ no need to create a fuss!
 
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