Give two reasons to justify
Water at room temperature is a liquid.
At room temperature water is a liquid because of the following characteristic of liquid:
1) At room temperature, water has no shape but a fixed volume that is, it occupies the shape of the container in which it is kept.
2) Water at room temperature is a liquid because it has fluidity.
Convert the following temperatures to Kelvin scale
25°C
What is the physical state of water at
100 °C
For any substance, why does the temperature remain constant during the change of state ?
Suggest a method to liquify atmospheric gases.
Convert the following temperatures to Kelvin scale.
35°C
Give reason for the following observations.
Naphthalene balls disappear with time without leaving any solid.
Give reason for the following observations.
We can get the smell of perfume sitting several metres away.
What is the physical state of water at
a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
Mock Test Series
