Match List-I with List-II
|
List-I |
List-II |
|
(A) Freons |
(I) Paint remover |
|
(B) DDT |
(II) Refrigeration |
|
(C) Dichloromethane |
(III) Fire extinguisher |
|
(D) Tetrachloromethane |
(IV) Insecticide |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
|
List-I |
List-II |
|
(A) Freons |
(II) Refrigeration |
|
(B) DDT |
(IV) Insecticide |
|
(C) Dichloromethane |
(I) Paint remover |
|
(D) Tetrachloromethane |
(III) Fire extinguisher |
(A) Freons (chlorofluorocarbons, CFCs) → Widely used as refrigerants and aerosol propellants → (II)
(B) DDT (dichlorodiphenyltrichloroethane) → Famous organochlorine insecticide → (IV)
(C) Dichloromethane (CH₂Cl₂), also called methylene chloride → Excellent solvent, commonly used as paint remover/stripper → (I)
(D) Tetrachloromethane (CCl₄), also known as carbon tetrachloride → Historically used in fire extinguishers (as Pyrene) because it is non-flammable and produces heavy vapours that smother flames → (III)