A lab technician performed the following tests on four solutions and recorded the results in the table below
Tests Performed on Unlabelled Solutions
Solution
Test
1
2
4
Disselves in HOU
v
Conducts electricity
X
Blue Litmus
no change no change red acid no change
Red litmus
no change no change no change
blue bax
✓
V
v
Numerical Response
0
12. Match each of the solutions numbered above with the name of a chemical that it could be,
as given below.
Sodium hydroxide (NaOH)
Sodium chloride (NaCl)
Glucose (C. H.0)
Hydrochloric acid (HC)
(Record in the first column)
(Record in the second column)
(Record in the third column)
(Record in the fourth column)

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.