Solved UPSC CDS/OTA Question
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Q · Organic Chemistry Medium · 45s
Which of the following is used as an antiknock in petrol?
TopicOrganic Chemistry
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Ethanol is blended with petrol to increase octane rating and reduce knocking.
Final Answer: Option D - Ethanol