Question

Ram decides to check whether his teacher has taught him properly. He took three things.
1. A solid metallic ball
2. Milk
3. Air in balloon

He tried to compress these things and came up with the order of ease by which he was able to compress these.

What will be the order he would have got??

• A. 1>2>3
• B. 3>2>1
• C. 1>3>2
• D. 2>1>3

Answer 1

The correct option is B 3>2>1

For this question, recollect our knowledge on intermolecular forces of attraction present in solids, liquids and gases.
I hope you all know it. If not, let me tell you.
IMFs (solids) >IMFs(liquids) > IMFs (gases).
Therefore, the space between the molecules will be in order:
Gases > Liquids > Solids
Therefore, it will be very hard to compress solids. They are generally incompressible, while Liquids are also almost incompressible or very less compressible.
Gases are compressible because of availability of large spaces between molecules.
Now, go and tell Ram about the order of ease by which he can compress these.
$\Rightarrow 3>2>1$