Arrange the following speeds in increasing order:
(i) Bicycle moving with a speed of 18 km/h.
(ii) A fast runner running with a speed of 7 m/s.
(iii) A car moving with a speed of 2000 m/min.
To compare the various speeds, we first express them in the same units:
Clearly, Speed of bicycle < Speed of fast runner < Speed of car.
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 ?
What produces more severe burns, boiling water or steam ?
8. Name A, B, C, D, E and F in the following diagram showing state change :
Both boiling and evaporation convert a liquid into vapour. What is the difference between the two process
Define Evaporation
Mock Test Series
