Ramesh took two beakers and containing hot water and cold water, respectively. In each beaker, he dropped a crystal of copper sulphate. He kept the beakers undisturbed. After some time what did he observe and why?
Important Questions on Matter in Our Surroundings
Describe the process of sublimation by taking the example of ammonium chloride.
Discuss briefly the effect of temperature on the change of state of a solid into liquid and that of a liquid to a gas.
How will you demonstrate that water vapour is present in the air?
A substance ' is highly compressible and can be easily liquefied. It can also take up the shape of any container. Predict the nature of the substance. Enlist any four properties of this state of matter.
Discuss the role of pressure and temperature in the liquefication of a gas.
With the help of a well-labelled diagram (with two labelling) explain how solid ammonium chloride converts directly to gaseous state on heating?
Santosh was getting late for the office. He tried to sip boiling hot tea from a cup. He felt very uncomfortable. His wife immediately brought a plate and asked him to sip the tea from the plate. Santosh followed her advice and did not face any problems.
How did sipping tea from a plate was more comfortable?
