Home
Class 8
PHYSICS
The process that you saw in Activity 14....

The process that you saw in Activity 14.7 is used for 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?

Promotional Banner

Topper's Solved these Questions

  • 2020 QUES PAPER

    MBD -HARYANA BOARD|Exercise EXAMPLE|6 Videos

  • FORCE AND PRESSURE

    MBD -HARYANA BOARD|Exercise EXAMPLE|67 Videos

Similar Questions

Explore conceptually related problems

Tbe diagram shows the process of purification of copper metal A thick copper p]ate A of impure copper and a thin copper plate B are immersed in a metal ·sulphate solution and an. electric current is passed through it. Which electrode is connected to the positive terminal of the battery?

Tbe diagram shows the process of purification of copper metal A thick copper p]ate A of impure copper and a thin copper plate B are immersed in a metal ·sulphate solution and an. electric current is passed through it. Which electrode is connected to the negative terminal of the battery?

The diagram shows the process of purification of copper metal. A thick copper plate A of impure copper and a thin copper plate B are immersed in a metal sulphate solution and an electric current is passed through it. What is liberated at the cathode? Explain.

Tbe diagram shows the process of purification of copper metal A thick copper p]ate A of impure copper and a thin copper plate B are immersed in a metal ·sulphate solution and an. electric current is passed through it. Does the copper anode (increase/decrease/ remains unchanged) in weight?

Tbe diagram shows the process of purification of copper metal A thick copper p]ate A of impure copper and a thin copper plate B are immersed in a metal ·sulphate solution and an. electric current is passed through it. Which metal solution is taken as electrolyte?

Refining to impure copper with zinc impurity ist o be done be electrolysis using electrodes as:

MBD -HARYANA BOARD-CHEMICAL EFFECTS OF ELECTRIC CURRENT -EXAMPLE
  1. Paheli had heard that rain water is as good as distilled water. So, sh...

    Text Solution

    |

  2. Prepare a list of objects around you that are electroplated.

    Text Solution

    |

  3. The process that you saw in Activity 14.7 is used for purification of ...

    Text Solution

    |

  4. In order to kept the flow of electricity continue in circuit, which of...

    Text Solution

    |

  5. Pankaj knows that pure water is bad conductor of electricity. If you d...

    Text Solution

    |

  6. Which out of the following is insulator of electricity?

    Text Solution

    |

  7. Which out of the following is not an insulator?

    Text Solution

    |

  8. What is the effectr of passing electric current through the solution o...

    Text Solution

    |

  9. Which effect of electric current current is used in electroplating ?

    Text Solution

    |

  10. The availability of some amount of impurities make water:

    Text Solution

    |

  11. A tester is used to check the conduction of electricity through two li...

    Text Solution

    |

  12. Is human body a conductor or an insulator?

    Text Solution

    |

  13. What are conductors?

    Text Solution

    |

  14. What are insulators? Give examples.

    Text Solution

    |

  15. Do all liquids allow electric current to pass through them?

    Text Solution

    |

  16. What is LED?

    Text Solution

    |

  17. Name the phenomenon of breaking up of a chemical compound under the ac...

    Text Solution

    |

  18. What do we get on electrolysis of acidulated water?

    Text Solution

    |

  19. Which effect of current is used in electroplating?

    Text Solution

    |

  20. Which effect of current makes a bulb glow?

    Text Solution

    |