What happens to the kinetic energy of a meteoroid as it travels farther through the atmosphere to earths surface

The kinetic energy of a meteor decreases as it travels through the atmosphere.

Friction with molecules in the atmosphere causes the meteor to slow down and lose kinetic energy.

The lost kinetic energy is converted into heat, which causes the glow along the meteor’s trail.

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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.