Question

Some substances are given below.
I) Air II) Water III) Sand Iv) Butter
Arrange these substances in the increasing order of their kinetic energies.

• A. IV < III < I < II
• B. IV < III < II < I
• C. III < IV < I < II
• D. III < IV < II < I

Answer 1

The correct option is D III < IV < II < I

The kinetic energy of an object is the energy due to its motion. The kinetic energy order of solids, liquids, and gases is:
Solid < Liquid < Gas
Here, sand (a solid) has very less kinetic energy as the particles are very tightly packed.
Air (gaseous) has very high kinetic energy as the particles are freely moving.
Between water and butter, the fluidity of water is higher than that of butter. So, water has a higher kinetic energy than butter.