Please select a subject first
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Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
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Write the reaction of carbon dioxide with lime water.
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Microplastics can be found in almost every freshwater source.
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How do plastic sheets affect the soil?
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Write a note on biodiesel.
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Blue Cross of India was established in ______ in India.
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What are the functions of CPCSEA?
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A moving body comes to rest due to friction alone.
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Rolling friction is slightly greater than sliding friction.
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Match the following.
| Column I | Column II | |
| a) | Static friction | Viscosity |
| b) | Kinetic friction | Least friction |
| c) | Rolling friction | Objects are in motion |
| d) | Friction between the liquid layers | Objects are sliding |
| e) | Sliding friction | Objects are at rest |
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Complete the analogy.
Knot in a thread : _____ friction : : Ball bearing : _____ friction
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How do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?
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Why is a ball bearing used in a cycle hub?
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Explain how friction can be minimized.
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Is there any possibility of making a special device to measure the magnitude of friction directly?
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What is dispersion? Explain in detail.
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In parallel circuit, current remains the same in all components.
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Give some uses of electroplating.
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