Monday, May 4, 2020

Matter

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[Study material]Matter in our surroundings There are a large number of things around us which we see and feel. For example, you can see ...
Tuesday, April 28, 2020

an iron almirah DJ solid at room temperature give two reason to justify

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 an iron almirah is a solid because it has definite shape. You cannot flow it means it is solid.

water at room temperature is a liquid give two reason to justify

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Water is liquid at normal temperature because it has no definite shape. It acquires the shape of the same container in which it is kept. Se...

we can get the smell of perfume sitting several metre away give reason

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Particles of scent mix with the particle of air automatically and spread everywhere. Due to this scattering of particles a man sitting at s...

Naphthalene balls disappear with time without leaving any solid give reason

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Naphthalene balls disappear without leaving any Residue because they are sublimated. In other words they are converted into gaseous state d...

why is ice at 273 K more effective in cooling than water at the same temperature

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The energy of ice particles at 273 k A remains lower to the particles of water. As a result ice can absorb more energy from atmosphere this...
Monday, April 27, 2020

what produce more Severe Burns boiling water or stream

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At 373 K the energy of particles of vapour remains greater than the energy of particle of water at equal temperature. This happens due to t...