A mechanic adds a specific alcohol to an automobile radiator to prevent the cooling water from freezing in sub-zero temperatures. Which alcohol is used?
Q1. A mechanic adds a specific alcohol to an automobile radiator to prevent the cooling water from freezing in sub-zero temperatures. Which alcohol is used?
Answer: Ethylene glycol
Explanation: Ethane-1,2-diol (Ethylene glycol) is used as an antifreeze because it lowers the freezing point of water. Ethanol is too volatile for this.