State whether the following statement is true or false:
The force of attraction between the constituent particles in any form of matter is known as intermolecular force.

Give reasons:
$(a)$ Steam produces more severe burns than boiling water.
$(b)$ We are able to sip hot tea faster from a saucer rather than a cup.
$(c)$ Water kept in an earthen pot becomes cool during summer.

$A$ student heats a beaker containing ice and water. He measures the temperature of the content of the beaker as a function of time. Which of the following graphs would correctly represent the result? Justify your choice.

Name the state of matter in which:
$(a)$ Layers of particles can slip and slide over one another easily.
$(b)$ Particles just move around randomly because of very weak force of attraction.

$(a)$ What is matter? Write two properties of solids and two properties of liquids.
$(b)$ Ramesh took two beakers $A$ and $B$ 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? Why?

$2 \, mL$ of Dettol is added to a beaker containing $500 \, mL$ of water and stirred. State four observations that you make.