English

Paheli wants to deposit silver on an iron spoon. She took silver nitrate (AgNO3) solution in a beaker and set up a simple circuit for electroplating. - Science

Advertisements
Advertisements

Question

Paheli wants to deposit silver on an iron spoon. She took silver nitrate (AgNO3) solution in a beaker and set up a simple circuit for electroplating. Which terminal of the battery should the spoon be connected to? What material should the other electrode be made of? 

Answer in Brief
Advertisements

Solution

Spoon should be connected to the negative terminal of the battery. The other electrode should be made of silver, so that silver ions get deposited on an iron spoon.

shaalaa.com
Effects of Electric Current - Chemical Effects of Electric Current
  Is there an error in this question or solution?
Chapter 14: Chemical Effects of Electric Current - Short Answer Questions [Page 80]

APPEARS IN

NCERT Exemplar Science [English] Class 8
Chapter 14 Chemical Effects of Electric Current
Short Answer Questions | Q 14. | Page 80

RELATED QUESTIONS

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


Name three liquids, which when tested in the manner shown in Figure, may cause the magnetic needle to deflect.


An electric current can produce


Paheli set up an experiment using liquid A in the beaker as shown in the following figure. She observed that the bulb glows. Then she replaced the liquid A by another liquid B. This time the bulb did not glow. Boojho suggested replacing the bulb by an LED. They observed that the LED glows. Explain.


Observe the following circuits carefully. In which circuit will the bulb glow? Write Yes or No in the blank space provided along each of the circuit given in the figure.

(a)


Piece of coal

______

(b)


Iron nail

______

(c)


Eraser

______

(d)


Steel spoon

______

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.


A chemical reaction happens when electricity passes through various conducting liquids.


______ is used in the extraction and purification of metals.


Assertion: Parts of cars and bicycles are made iron with chromium coating.
Reason: Chromium does not corrode and resist scratches.


Name the process which shows the chemical effect of electric current?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×