PressurepascalPaExercises1. Convert the following temperatures to the

PressurepascalPaExercises1. Convert the following temperatures to the celsius scale.(a) 293Kb ) 470 K.2. Convert the following temperatures to the Kelvin scale.(a) 25°Cfb) 373°C.3. Give reason for the following observations.(a) Naphthalene balls disappear with time without leaving anysolid.(b) We can get the smell of perfume sitting several metres away4. Arrange the following substances in increasing order of forcesof attraction between the particles-water, sugar, oxygen.5. What is the physical state of water at-(a) 25°C(b) 0°CC) 100°C ?. 6. Give two reasons to justify-(a) water at room temperature is a liquid.(b) an iron almirah is a solid at room temperature.7. Why is ice at 273 K more effective in cooling than water at thesame temperature?8. What produces more severe hums hnilini

Answer»

1;a=293-273=20°c b;470-273=197°c2;a=25+273=298°c b=373+273=646°c5;=a

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