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Doctors Medicines MCQs Q&A

  1. Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
  2. Temperature at which it solidifies or congeals
  3. It catches fire without external aid
  4. Indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
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1 Answers

Answer: Option 4

Volatility of diesel fuel oil is Indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off. Volatility refers to how easily a fuel vaporizes. It affects how easily you can start your car, warm it up, and how well it runs. Diesel fuel comes in two basic grades, each with a different volatility. Automobiles use one and large trucks do better on the other.

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