COMEDK202510 May 2025Evening ShiftChemistryHaloalkanes and HaloarenesActual
Choose the incorrect statement from the following.
Options
- ACH ₂ Cl ₂ is widely used as a propellant in aerosols.
- BFreon 1, 2 is manufactured from trichloromethane by Swartz reaction
- CAntiseptic property of Iodoform is due to the liberation of I ₂ when it comes in contact with skin
- DDDT was widely used because of its effectiveness against mosquitos that spread malaria
Correct answer
B. Freon 1, 2 is manufactured from trichloromethane by Swartz reaction
Step-by-step solution
Dichloromethane ( CH ₂ Cl ₂ ) is used as a solvent, a paint remover, as a propellant in aerosols, and as a process solvent in the manufacture of drugs. However, Freon 12 ( CCl ₂ F ₂ ) is manufactured from tetrachloromethane ( CCl ₄ ) by the Swarts reaction, not from trichloromethane ( CHCl ₃ ). Therefore, the statement that Freon 1, 2 is manufactured from trichloromethane by the Swarts reaction is incorrect. Iodoform ( CHI ₃ ) acts as an antiseptic due to the liberation of free iodine when it comes in contact with