Home/ Nadvala/Answers
  1. Asked: In:

    Identify the compound x on the basis of the reaction given below. Also, Write the name and chemical formulae of A, B and C. (1) X+Zn→ A+H₂ (2) X+HCI→ B+H₂O (3) X+CH₃COOH→ C+H₂O

    Nadvala

    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-2/

    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-2/

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    • 1
  2. Asked: In:

    An element p does not react with dil. H ₂SO₄. If forms an oxide PO which turns red litmus into blue. Will you call P as metal or a non-metal? Give reason.

    Nadvala

    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-2/

    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-2/

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    • -1
  3. Asked: In:

    What is bleaching powder chemically. How it is prepared. What happens when bleaching powder is exposed to air for long time? Give any two important uses of bleaching powder.

    Nadvala

    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-2/

    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-2/

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    • 1
  4. Asked: In:

    Statement 1. Metals oxides are basic in nature. Statement 2. Metal oxides turn red litmus paper into blue.

    Nadvala

    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/

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    • 1
  6. Asked: In:

    Statement 1: Metals are sonorous. Statement 2: Steel is an alloy.

    Nadvala

    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/

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    • 1
  7. Asked: In:

    Write the name and formula of three hydrated salts.

    Nadvala

    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-2/

    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-2/

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    • 1
  8. Asked: In:

    What happens when calcium carbonate is made to react with hydrochloric acid? Give the equation of reaction.

    Nadvala

    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-2/

    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-2/

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    • 1
  9. Asked: In:

    Why metallic oxides are called basic oxides and non-metallic oxides are called acidic oxides?

    Nadvala

    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-2/

    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-2/

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    • 1
  11. Asked: In:

    What is pH scale? What is pH value of salt formed by a (a) Weak acid and weak base? (b) Strong acid and strong base?

    Nadvala

    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-2/

    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-2/

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    • 1
  12. Asked: In:

    A metal compound ‘A’ reacts with dil H₂SO4 to produce a gas which extinguisher a Burning candle. Identify compound ‘A’ and gas produces. Write a balanced chemical equation for the reaction if one of compound formed is sodium sulphate.

    Nadvala

    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-2/

    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-2/

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    • 1