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Why does our palm feel cold when we put ...

Why does our palm feel cold when we put some acetone or petrol or perfume on it?

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MBD-MATTER IN OUR SURROUNDINGS-Example
  1. Why does a desert cooler cool better on a hot dry day ?

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  2. How does the water kept in an earthen pot (matka) become cool during s...

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  3. Why does our palm feel cold when we put some acetone or petrol or perf...

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  4. Why are we able to sip hot tea or milk faster from saucer rather than ...

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  5. What type of clothes should we wear in summer ?

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  6. Convert the following temperature to the Celsius scale : 293 K

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  7. Convert the following temperature to the Celsius scale :470 K

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  8. Convert the following temperatures to the Kelvin scale : 25^@ C

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  9. Convert the following temperatures to the Kelvin scale : 1373^@ C

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  10. Give reason for the following observations: Naphthalene balls disappea...

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  11. Give reason for the following observations : We can get the smell of ...

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  12. Arrange the following substances in increasing order of forces of attr...

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  13. What is the physical state of water at :25^@C

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  14. What is the physical state of water at :0^@ C

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  15. What is the physical state of water at :100^@ C

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  16. Give two reasons to justify that :Water at room temperature is a liqui...

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  17. Give two reasons to justify that :An iron almirah is a solid at room t...

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  18. Why is ice at 273 K more effective in cooling than water at the same t...

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  19. What produces more severe burns : boiling water or steam ?

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  20. Name A, B, C, D, E and F in the following diagram showing state change

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