Match List - I with List - II.
| List - I | List - II | ||
| Compound | Use | ||
| (A) | Carbon tetrachloride | (I) | Paint remover |
| (B) | Methylene chloride | (II) | Refrigerators and air conditioners |
| (C) | DDT | (III) | Fire extinguisher |
| (D) | Freons | (IV) | Non-biodegradable insecticide |
Choose the correct answer from the options given below: [2024]
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
(B)
(A) Until the mid 1960s, it was also widely used as a cleaning fluid, both in industry, as a degreasing agent, and in the home, as a spot remover and as fire extinguisher.
(B) Methylene chloride () is widely used as a solvent, as a paint remover, as a propellant in aerosols, and as a process solvent in the manufacture of drugs. It is also used as a metal cleaning and finishing solvent.
(C) DDT is a non-biodegradable insecticide.
(D) The chlorofluorocarbon compounds of methane and ethane are collectively known as freons. These are usually produced for aerosol propellants, refrigeration and air conditioning purposes.
Match List I with List II
| List I (Compound) | List II (Uses) | ||
| A. | Iodoform | I. | Fire extinguisher |
| B. | Carbon tetrachloride | II. | Insecticide |
| C. | CFC | III. | Antiseptic |
| D. | DDT | IV. | Refrigerants |
Choose the correct answer from the options given below: [2024]
A–II, B–IV, C–I, D–III
A–III, B–I, C–IV, D–II
A–I, B–II, C–III, D–IV
A–III, B–II, C–IV, D–I
(B)
Iodoform: It was used earlier as an antiseptic but the antiseptic properties are due to the liberation of free iodine and not due to iodoform itself. Due to its objectionable smell, it has been replaced by other formulations containing iodine.
Carbon tetrachloride: It is used as fire extinguisher, cleaning fluid, degreasing agent, in the manufacture of refrigerants and propellants for aerosol cans etc.
CFCs: These are usually produced for aerosol propellants, refrigeration and air conditioning purposes.
DDT: It is the first chlorinated organic insecticide.
