$A$ mixture of sulphur and carbon disulphide is

Give some examples of the Tyndall effect observed in your surroundings.

The 'sea-water' can be classified as a homogeneous as well as heterogeneous mixture. Comment.

State the principle involved in separating a mixture containing kerosene and water.

Why is the interconversion of states of matter considered a physical change? Give three reasons to justify your answer.

Which of the following statements are true for pure substances?
$(i)$ Pure substances contain only one kind of particles.
$(ii)$ Pure substances may be compounds or mixtures.
$(iii)$ Pure substances have the same composition throughout.
$(iv)$ Pure substances can be exemplified by all elements other than nickel.