Define volume. a the mass of liquid required to fill a container b length x width x height c the space occupied by a liquid d the space occupied by mass

The amount of space occupied by any object is said to be its volume. The base S.I. unit for measuring the volume is litre.

A: the mass of liquid which is required to fill a container is not volume because volume is space occupied by an object which can be in any state.

B: is formula not the definition of volume.

C: the space occupied by liquid is not volume because volume can be calculated for matter in any state, for example: one can calculate volume of solid, liquid and gas.

D: the space occupied by mass is volume because anything that occupies space has mass. So, it cannot be particularly for solid or liquid or gas.

Hence, option D is the correct answer.

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.