Arrange the gases present in air in increasing order of their boilling points. What do you observe

What colour do you observe ?

Arrange the following compounds in increasing order of their basic strength.

Arrange the following compounds in increasing order of polarity

Arrange the following in the increasing order of boiling points : Bromomethane, Bromoform, Chloromethane and dibromoethane .

What are the gases, mainly present in the air ?

Arrange the elements of 2^(nd) period in the increasing order of their 1^(st) ionization energies . What is your observation ?

In this picture what changes do you observe?

Arrange the threads in the order of increasing strength.

Arranged elements increasing order of their electro negativity values.

Now, cover the torch glass with oily paper. What do you observe?