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  1. To organize a toy exhibition: 1. Choose a purpose (awareness, creativity) and theme like eco-friendly toys. 2. Select and decorate a suitable venue. 3. Display toys attractively with creators’ names and labels. 4. Send invitations to parents and community members. 5. Arrange volunteers for visitor aRead more

    To organize a toy exhibition:
    1. Choose a purpose (awareness, creativity) and theme like eco-friendly toys.
    2. Select and decorate a suitable venue.
    3. Display toys attractively with creators’ names and labels.
    4. Send invitations to parents and community members.
    5. Arrange volunteers for visitor assistance and safety.
    6. Collect feedback for improvement.
    This event fosters creativity, promotes sustainable practices, and engages the community meaningfully.

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  2. To explore simple machines, create a chain reaction model combining levers, wheels, and pulleys. Repair a bicycle to understand how simple machines interact. Observe tools like scissors or bottle openers at home to identify their mechanisms. Research historical uses of simple machines, such as leverRead more

    To explore simple machines, create a chain reaction model combining levers, wheels, and pulleys. Repair a bicycle to understand how simple machines interact. Observe tools like scissors or bottle openers at home to identify their mechanisms. Research historical uses of simple machines, such as levers in temple construction. These activities enhance problem-solving skills and demonstrate the relevance of simple machines in daily life and larger engineering projects.

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  3. The correct answer is: (c) Corrosion and it is a chemical change. Rusting occurs when iron reacts with oxygen and moisture, forming iron oxide (rust). This process alters the chemical composition of iron, making it a chemical change rather than a physical one. https://www.tiwariacademy.com/ncert-solRead more

    The correct answer is: (c) Corrosion and it is a chemical change. Rusting occurs when iron reacts with oxygen and moisture, forming iron oxide (rust). This process alters the chemical composition of iron, making it a chemical change rather than a physical one.

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/

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  4. (b) Germanium, because it has both type of characteristics like metal and non-metal. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/

    (b) Germanium, because it has both type of characteristics like metal and non-metal.

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/

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  5. For any invertible square matrix A, the determinant of its inverse is given by: |A⁻¹| = 1/|A| Since |A| = 4, we have: |A⁻¹| = 1/4 Thus, the correct answer is 1/4. Click here for more: https://www.tiwariacademy.com/ncert-solutions/class-12/maths/#chapter-4

    For any invertible square matrix A, the determinant of its inverse is given by:

    |A⁻¹| = 1/|A|

    Since |A| = 4, we have:

    |A⁻¹| = 1/4

    Thus, the correct answer is 1/4.

    Click here for more:
    https://www.tiwariacademy.com/ncert-solutions/class-12/maths/#chapter-4

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