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Grade: 11

                        

Which of the following statements are correct about voltaic cell? (I) Chemical energy is converted into electrical energy. (II) Electrons flow from anode to cathode. (III) Oxidation occurs at anode. (IV) Anode is negative and cathode is positive. A I and III B I, II and III C I, III and IV D I, II, III and IV

Which of the following statements are correct about voltaic cell?
(I) Chemical energy is converted into electrical energy.
(II) Electrons flow from anode to cathode.
(III) Oxidation occurs at anode.
(IV) Anode is negative and cathode is positive.

A

I and III

B

I, II and III

C

I, III and IV

D

I, II, III and IV

 

4 months ago

Answers : (2)

Vikas TU
14149 Points
							
Dear student 
In Voltaic cell external circuit, electrons flow from anode to cathode.
Oxidation occurs at anode and reduction occurs at the cathode.
Since, during oxidation the ions supply electrons to anode, the anode is a negative electrode. Similarly, the cathode is a positive electrode.
So Option D is correct.
4 months ago
ankit singh
askIITians Faculty
609 Points
							
The voltaic cells convert chemical energy into electrical energy. Thus, a spontaneous chemical reaction generates chemical energy.
Through external circuit, electrons flow from anode to cathode.
Oxidation occurs at anode and reduction occurs at the cathode.
Since, during oxidation the ions supply electrons to anode, the anode is a negative electrode. Similarly, the cathode is a positive electrode.
Option D is correct.
4 months ago
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