English

The passage of an electric current through a solution causes ______ effects.

Advertisements
Advertisements

Question

The passage of an electric current through a solution causes ______ effects.

Fill in the Blanks
Advertisements

Solution

The passage of an electric current through a solution causes chemical effects.

Explanation:

The passage of an electric current through a conducting solution causes chemical reactions. As a result, bubbles of gas may be formed on the electrodes. Deposits of metal may be seen on electrodes. Changes in the colour of solutions may occur. The reaction would depend on what solution and electrodes are used. These are some of the chemical effects of the electric current.

shaalaa.com
Effects of Electric Current - Chemical Effects of Electric Current
  Is there an error in this question or solution?
Chapter 11: Chemical Effects of Electric Current - Exercises [Page 146]

APPEARS IN

NCERT Science [English] Class 8
Chapter 11 Chemical Effects of Electric Current
Exercises | Q 1. (b) | Page 146

RELATED QUESTIONS

If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ______ terminal of the battery.


The process of depositing a layer of any desired metal on another material by means of electricity is called ______.


The process that you saw in the image is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?


Electroplating is an example for ______.


Boojho and Paheli performed experiments taking similar bulbs and cells but two different solutions A and B as shown in the following figure.

Boojho's Experiment Paheli's Experiment
(A) (B) 

They found that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that


In the circuit given as figure, Boojho observed that copper is deposited on the electrode connected to the negative terminal of the battery. Paheli tried to repeat the same experiment. But she could find only one copper plate. Therefore, she took a carbon rod as negative electrode. Will copper still be deposited on the carbon rod? Explain your answer.


You are provided with a magnetic compass, an empty matchbox, a battery of two cells and connecting wires. Using these objects, how will you make a tester for testing an electric circuit? Draw the necessary circuit diagram and explain.


Liquids that conduct electricity are the solutions of ______.


______ is used in the extraction and purification of metals.


Match the following

1. Anode a. Conducting solution
2. Cathode b. Positive terminal
3. Ions c. Negative terminal
4. Electrolyte d. Positively or negatively charged

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×