Home/ Sadhna/Answers
  1. Asked: In:

    Sodium is lightly reactive metal. It can not be obtained with heating with carbon. Give reason for it. How sodium is obtained from sodium chloride.

    Sadhna

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    See less
    • 1
  2. Asked: In:

    Give reasons: Silver article becomes black after some time.

    Sadhna

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    See less
    • 1
  3. Asked: In:

    Give reasons: Zn can desplace copper from CuSO₄ solution colour of solution in four test tubes ore green, yellow, blue and colourless. Which has ZnSO₄ solution?

    Sadhna

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    See less
    • 1
  4. Asked: In:

    What are alloys? List two properties of alloys.

    Sadhna

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    See less
    • 1
  6. Asked: In:

    What is the difference between a mineral and an ore?

    Sadhna

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download. Please follow the link to visit website for first and second term exams solutions. https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    Get Hindi Medium and English Medium NCERT Solution for Class 10 Science to download.
    Please follow the link to visit website for first and second term exams solutions.
    https://www.tiwariacademy.com/ncert-solutions/class-10/Science/chapter-3/

    See less
    • 1