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Home/additional cbse sample paper

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Mayur Arya
Mayur Arya
Asked: December 27, 2023In: Class 10 Science

Kaveri conducted an experiment to study the energy efficiency of different bulbs. She connected a bulb A having a resistance of 100 ohms to a 240 V power supply in a laboratory. (a) How much energy will be consumed by the bulb, if it is kept ON for 4 hours each day for a week? Express your answer in kJ. (b) Kaveri connects another similar bulb B in series with bulb A and connects the combination to a 240 V supply. Will there be any change in the brightness with which bulb A glows now? Explain mathematically.

Energy efficiency refers to using less energy to perform a task while maintaining or improving performance. It involves optimizing technology and practices to reduce energy consumption, costs, and environmental impact.

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Srushti
Srushti
Asked: December 27, 2023In: Class 10 Science

Proteinuria is a condition in which significant amounts of protein can be detected in urine. Which process in the nephron is likely to be affected causing proteinuria? Justify.

Proteinuria is the presence of excess proteins in urine, indicating potential kidney dysfunction. It can result from various conditions, such as kidney disease or inflammation. Monitoring and addressing underlying causes are crucial.

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Mayur Arya
Mayur Arya
Asked: December 19, 2023In: Class 10 Science

What is reactivity series? How does the reactivity series of metals help in predicting the relative activities of various metals?

NCERT latest Class 10 Science sample question paper 2023-2024

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