Please select a subject first
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Explain the following effects of heat.
Chemical changes
Concept: undefined >> undefined
Why is a sound wave called a longitudinal wave?
Concept: undefined >> undefined
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In longitudinal waves, the particle vibrates in a ______ direction of propagation.
Concept: undefined >> undefined
Sound travels in the air as ______ wave.
Concept: undefined >> undefined
The elastic property of medium is a factor of ______ medium.
Concept: undefined >> undefined
The speed of sound in air at 0°C is ______.
Concept: undefined >> undefined
Assertion: The sound of thunder is heard a little later than the flash of light.
Reason: The speed of sound is much less than the speed of light.
Concept: undefined >> undefined
Distinguish between compression and rarefactions.
Concept: undefined >> undefined
The Geocentric model of the universe was proposed by ______.
Concept: undefined >> undefined
The total area of the observable universe is about ______ light-years.
Concept: undefined >> undefined
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Concept: undefined >> undefined
Solids possess very high kinetic energy.
Concept: undefined >> undefined
Liquids cannot be compressed and they have fixed volume.
Concept: undefined >> undefined
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
Concept: undefined >> undefined
Complete the following table:
| S.No. | CELSIUS | KELVIN |
| 1. | 90°C | 363 K |
| 2. | ______ | 283 K |
| 3. | 63 °C | ______ |
| 4. | 250°C | ______ |
| 5. | ______ | 303 K |
Concept: undefined >> undefined
Intermolecular space is maximum in ______.
Concept: undefined >> undefined
