Category: Science IX

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Metal – Science

Metals • Reaction with oxygen: When metal is treated with oxygen on heating they react together to give basic oxides....

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Measurement – Science

Measurement Those physical quantities, which can neither be derived from others nor be further resolved into simpler quantities, are called...

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Force- Science

Force is an external agent, which changes or tends to change the state, shape, acceleration or direction of motion of...

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Machine – Science

Machine • The device or instruments, which make our work easier, faster and convenient are called simple machines. Lever, Wheel...