Classify each substance based on the intermolecular forces present in that substance. hydrogen bonding, dipole–dipole, and dispersiondipole–dipole and dispersion only dispersion only
h20
ch4
co
ch3cl

Let us understand the inter molecular forces in brief

a) hydrogen bond: it is an interaction between a highly electro-negative element (F,O or N) and a hydrogen attached to a highly electro-negative element (F,O or N)

b) Dipole dipole interaction : the interaction is present in a molecule where bonds are polar [due to electro-negativity difference between bonded atoms]

c) Dispersion forces: these are weakest inter-molecular forces present between any two atoms due to development of temporary dipoles.

this is present in all molecules

In water  or : Hydrogen bonding, dipole–dipole, and dispersion

Where hydrogen is attached to oxygen and can form hydrogen bond

In CO  and CH3Cl: Dipole–dipole and dispersion only

In case of methane: there is no polar bond, no highly electronegative element so they have only Dispersion forces

it is the most commonly accepted one