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To avoid knocking of the engine of a car, certain compounds are added to petrol, which are known as anti-knocking agents. Which one of the following is an anti-knocking agent?
A.Ethyl alcohol
B.White petrol
C. Tetra ethyl lead
D.Butane
Ans:-B.White Petrol
A
it decreases the freezing point of water.(A colligative property of solute)
C)
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