The mass per unit volume of a substance is called (density = mass/volume).
Arrange the following in order of increasing density- air, exhaust from chimney, honey, water, chalk, cotton, and iron.
The given substance in the increasing order of their densities can be represented as:
Air< Exhaust form chimney< Cotton< Water< Honey< Chalk<Iron.
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
Give two reasons to justify
Water at room temperature is a liquid.
Give two reasons to justify
An iron almirah is a solid at room temperature.
Why is ice at 273K more effective in cooling than water at the same temperature ?
Mock Test Series
