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question_answer1) Which of the following is used as an ant knocking material?
question_answer2) Coal tar is a main source of
question_answer3) An example of fossil fuel is
question_answer4) Most of the fuels are
question_answer5) Destructive distillation of coal leads to the formation of
question_answer6) When steam is passed over hot coke, it produces
question_answer7) LPG contains
question_answer8) Petrol for aviation proposes must contain
question_answer9) Producer gas is a mixture of
question_answer10) The fractional distillation of coal tar yields
question_answer11) Which of the following is obtained on fractional distillation of petroleum ?
question_answer12) Kerosene is mixture of
question_answer13) Which one of the following is used as an antiknocking substance?
question_answer14) Octane number is a scale for counting
question_answer15) Coke is obtained by heating coal in the
question_answer16) Gasoline is a mixture of
question_answer17) Which of the following forms of coal has maximum percentage of carbon?
question_answer18) Which of the following compounds has the highest calorific- value?
question_answer19) Which of the following is present in the heavy oil obtained during petroleum distillation?
question_answer20) In which of the following compounds maximum heat is liberated on combustion of one mole of the compound?
question_answer21) Petroleum is formed under the earth's crust by chemical changes in
question_answer22) Quality of a diesel is measured in terms of its
question_answer23) Water gas consists of
question_answer24) Refining of petroleum involves
question_answer25) The order of appearance of the following with rising temperature during the refining of crude oil is
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