Q1. Ethylene glycol is used:
A as a food preservative
B in repairing punctures of tubeless tyres
C in detergent manufacturing
D as an antifreeze Correct
Explanation
Ethylene glycol is best known for its use as an antifreeze, especially in automobile cooling systems, because it lowers the freezing point of water and raises the boiling point of the coolant mixture. It is toxic, so it is not used as a food preservative. Repairing punctures of tubeless tyres involves sealants or plugs, not ethylene glycol as the standard material. Detergent manufacturing uses surfactants, builders and related additives; ethylene glycol is not the basic answer for that process in this question.