Question

Halogenated hydrocarbons have many uses. What have halogenated hydrocarbons been used for?
$1.$ Solvents,
$2.$ Refrigerants,
$3.$ Monomers in polymer manufacture.
Choose the correct option: -
(A). $1,2$ and $3$ are correct.
(B). $1$ and $2$ correct.
(C). $2$ and $3$ correct.

Answer 1

Hint: In the periodic table several groups were given specific names like the group $1$ is named as alkali metal, group $2$ is named as alkali earth metals, group $13$ is named as Icosagens, group $14$ is named as crystallogens, group $15$ is named as pnictogens, group $16$ is named as chalcogens, group $17$ is named as halogens, group $18$ is named as noble gases.

Complete answer:
Halogens are the group $17$ elements having fluorine, chlorine, bromine, iodine, astatine and tennessine. They all are non-metallic in nature. The word halogen is derived from Greek language meaning Halo as sea salt and genes as producing thus halogens are sea salting producers. For the halogens, the melting and boiling point increases down the group. All the halogens are colored in nature. The halogens are soluble ( either fully or partially ) in water and are completely soluble in organic solvents like chloroform, hexane, benzene and many more. The halogens are widely used in our day to day life, for example: -
Halogens with other atoms form solvents like chloroform having formula as $CHC{l_3}$.
Halogens are used in Refrigerants like the hydrochlorofluorocarbons having formula as $HCFCs$.
Halogens are widely present in polymers forming monomers like chloride ions in polyvinyl chloride, chloroethane, and many more.
Thus the correct answer is (A). $1,2$ and $3$ are correct.

Note:
Halogens are used in chemical, water, sanitation, plastic, pharmaceutical, pulp and paper, textile, military, and oil industries. Several halogens are formed as chemical intermediates. Halogens are used as fuel for rockets. However, these halogens cause suffocation, coughing, and sensation of constriction in the chest if inhaled in large quantities.