If gas particles start colliding with the walls of their metallic container with increased force, what is their direct effect? lower gas pressure higher gas pressure lower volume of gas higher volume of gas

Higher gas pressure

Explanation:

According to force and pressure relation stated above, pressure exerted is directly proportional to the force applied.

From this we can easily predict that pressure of the gas will increase when gas particles are colliding with the walls of metallic container with increased force.

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.